./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_11_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/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_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_11_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/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_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/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 93bebbdc3ee9cd81b94f94132366dd7fabe0e91bdb03bdb4a54f809725af6783 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:03,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:03,988 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:08:03,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:03,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:04,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:04,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:04,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:04,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:04,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:04,024 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:04,025 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:04,026 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:04,026 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:04,027 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:04,027 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:04,028 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:04,029 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:04,029 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:04,030 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:04,030 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:04,031 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:04,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:04,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:04,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:04,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:04,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:04,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:04,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:04,035 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:08:04,036 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:08:04,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:04,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:04,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:04,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:04,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:04,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:04,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:04,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:04,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:04,039 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:04,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:04,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:04,040 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:04,040 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:04,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:04,041 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_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93bebbdc3ee9cd81b94f94132366dd7fabe0e91bdb03bdb4a54f809725af6783 [2023-11-23 21:08:04,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:04,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:04,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:04,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:04,429 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:04,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_11_good.i [2023-11-23 21:08:07,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:08,010 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:08,012 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_11_good.i [2023-11-23 21:08:08,043 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/data/2570c758d/02a6880818e1428f8cd404d995a1ff4a/FLAG883a52844 [2023-11-23 21:08:08,076 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/data/2570c758d/02a6880818e1428f8cd404d995a1ff4a [2023-11-23 21:08:08,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:08,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:08,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:08,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:08,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:08,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698d720a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08, skipping insertion in model container [2023-11-23 21:08:08,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:08,611 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:08:09,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:09,297 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:09,340 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:08:09,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:09,575 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:09,575 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:09,576 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:09,576 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:09,576 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:09,576 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:09,584 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:09,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09 WrapperNode [2023-11-23 21:08:09,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:09,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:09,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:09,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:09,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,682 INFO L138 Inliner]: procedures = 504, calls = 95, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 155 [2023-11-23 21:08:09,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:09,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:09,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:09,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:09,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:09,789 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:09,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:09,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:09,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (1/1) ... [2023-11-23 21:08:09,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:09,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:09,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:09,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-23 21:08:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-23 21:08:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 21:08:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 21:08:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 21:08:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrue [2023-11-23 21:08:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrue [2023-11-23 21:08:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:08:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:08:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:08:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsFalse [2023-11-23 21:08:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsFalse [2023-11-23 21:08:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 21:08:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:10,146 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:10,150 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:10,495 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:10,540 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:10,540 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:08:10,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:10 BoogieIcfgContainer [2023-11-23 21:08:10,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:10,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:10,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:10,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:10,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:08" (1/3) ... [2023-11-23 21:08:10,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199bdd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:10, skipping insertion in model container [2023-11-23 21:08:10,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:09" (2/3) ... [2023-11-23 21:08:10,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199bdd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:10, skipping insertion in model container [2023-11-23 21:08:10,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:10" (3/3) ... [2023-11-23 21:08:10,558 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_11_good.i [2023-11-23 21:08:10,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:10,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 21:08:10,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:10,688 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;@4198598b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:10,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-23 21:08:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 58 states have internal predecessors, (63), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:08:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:08:10,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:10,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:10,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:10,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash -167896138, now seen corresponding path program 1 times [2023-11-23 21:08:10,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:10,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287412622] [2023-11-23 21:08:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:10,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:11,201 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 21:08:11,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287412622] [2023-11-23 21:08:11,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287412622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:11,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:11,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:08:11,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121735951] [2023-11-23 21:08:11,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:11,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:11,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:11,267 INFO L87 Difference]: Start difference. First operand has 77 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 58 states have internal predecessors, (63), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:08:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:11,353 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2023-11-23 21:08:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:11,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2023-11-23 21:08:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:11,366 INFO L225 Difference]: With dead ends: 145 [2023-11-23 21:08:11,366 INFO L226 Difference]: Without dead ends: 71 [2023-11-23 21:08:11,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:11,374 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:11,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-23 21:08:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-23 21:08:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 54 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:08:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-11-23 21:08:11,429 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 17 [2023-11-23 21:08:11,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:11,431 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-11-23 21:08:11,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:08:11,431 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-11-23 21:08:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:08:11,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:11,433 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 21:08:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:08:11,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:11,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -230804325, now seen corresponding path program 1 times [2023-11-23 21:08:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886198967] [2023-11-23 21:08:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:11,596 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 21:08:11,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:11,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886198967] [2023-11-23 21:08:11,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886198967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:11,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773619511] [2023-11-23 21:08:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:11,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:11,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:11,601 INFO L87 Difference]: Start difference. First operand 71 states and 93 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:08:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:11,645 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2023-11-23 21:08:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:11,645 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-11-23 21:08:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:11,647 INFO L225 Difference]: With dead ends: 71 [2023-11-23 21:08:11,648 INFO L226 Difference]: Without dead ends: 70 [2023-11-23 21:08:11,648 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 21:08:11,650 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 2 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:11,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 163 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-23 21:08:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-23 21:08:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 53 states have internal predecessors, (56), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:08:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2023-11-23 21:08:11,690 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 19 [2023-11-23 21:08:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:11,691 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2023-11-23 21:08:11,691 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:08:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2023-11-23 21:08:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:08:11,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:11,693 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] [2023-11-23 21:08:11,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:08:11,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:11,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1435000594, now seen corresponding path program 1 times [2023-11-23 21:08:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:11,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592323602] [2023-11-23 21:08:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:11,792 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 21:08:11,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:11,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592323602] [2023-11-23 21:08:11,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592323602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:11,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:11,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:11,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303743029] [2023-11-23 21:08:11,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:11,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:11,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:11,796 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:08:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:11,853 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2023-11-23 21:08:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:11,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-23 21:08:11,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:11,856 INFO L225 Difference]: With dead ends: 70 [2023-11-23 21:08:11,856 INFO L226 Difference]: Without dead ends: 69 [2023-11-23 21:08:11,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:11,858 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 8 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:11,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 224 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-23 21:08:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-23 21:08:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 52 states have internal predecessors, (55), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:08:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2023-11-23 21:08:11,871 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 20 [2023-11-23 21:08:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:11,872 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2023-11-23 21:08:11,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:08:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2023-11-23 21:08:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:08:11,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:11,875 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:11,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:08:11,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:11,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash 917998457, now seen corresponding path program 1 times [2023-11-23 21:08:11,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:11,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85589972] [2023-11-23 21:08:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:11,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:08:11,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:11,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85589972] [2023-11-23 21:08:11,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85589972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:11,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:11,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:08:11,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858369943] [2023-11-23 21:08:11,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:11,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:11,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:11,972 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:08:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:12,023 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2023-11-23 21:08:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:12,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 33 [2023-11-23 21:08:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:12,025 INFO L225 Difference]: With dead ends: 119 [2023-11-23 21:08:12,025 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 21:08:12,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:12,028 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:12,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 21:08:12,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-23 21:08:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 51 states have internal predecessors, (54), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 21:08:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2023-11-23 21:08:12,038 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 33 [2023-11-23 21:08:12,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:12,039 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2023-11-23 21:08:12,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:08:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2023-11-23 21:08:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:08:12,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:12,041 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:12,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:08:12,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:12,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash -484494989, now seen corresponding path program 1 times [2023-11-23 21:08:12,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:12,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126169576] [2023-11-23 21:08:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:12,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:08:12,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:12,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126169576] [2023-11-23 21:08:12,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126169576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:12,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609112614] [2023-11-23 21:08:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:12,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:12,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:12,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:12,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:08:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:12,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:08:12,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:08:12,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:12,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609112614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:12,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:08:12,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 21:08:12,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529077595] [2023-11-23 21:08:12,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:12,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:12,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:12,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:12,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:12,384 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:08:12,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:12,437 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2023-11-23 21:08:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:12,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2023-11-23 21:08:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:12,441 INFO L225 Difference]: With dead ends: 111 [2023-11-23 21:08:12,441 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 21:08:12,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:12,444 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:12,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 21:08:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-23 21:08:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 51 states have internal predecessors, (53), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 21:08:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2023-11-23 21:08:12,475 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 34 [2023-11-23 21:08:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:12,477 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2023-11-23 21:08:12,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:08:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2023-11-23 21:08:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:08:12,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:12,485 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:12,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:12,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:12,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:12,707 INFO L85 PathProgramCache]: Analyzing trace with hash -290725352, now seen corresponding path program 1 times [2023-11-23 21:08:12,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:12,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978036974] [2023-11-23 21:08:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:08:12,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:12,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978036974] [2023-11-23 21:08:12,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978036974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:12,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:12,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:12,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952428584] [2023-11-23 21:08:12,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:12,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:12,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:12,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:12,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:12,879 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 21:08:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:12,923 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2023-11-23 21:08:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:12,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 36 [2023-11-23 21:08:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:12,926 INFO L225 Difference]: With dead ends: 68 [2023-11-23 21:08:12,926 INFO L226 Difference]: Without dead ends: 67 [2023-11-23 21:08:12,926 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 21:08:12,930 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:12,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 151 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:12,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-23 21:08:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-23 21:08:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 21:08:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2023-11-23 21:08:12,956 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 36 [2023-11-23 21:08:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:12,958 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2023-11-23 21:08:12,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 21:08:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2023-11-23 21:08:12,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 21:08:12,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:12,962 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:12,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:08:12,962 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:12,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash -422551208, now seen corresponding path program 1 times [2023-11-23 21:08:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361018973] [2023-11-23 21:08:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:08:13,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:13,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361018973] [2023-11-23 21:08:13,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361018973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:13,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:13,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625945681] [2023-11-23 21:08:13,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:13,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:13,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:13,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:13,097 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:08:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:13,142 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2023-11-23 21:08:13,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2023-11-23 21:08:13,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:13,145 INFO L225 Difference]: With dead ends: 67 [2023-11-23 21:08:13,145 INFO L226 Difference]: Without dead ends: 66 [2023-11-23 21:08:13,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:13,148 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 8 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:13,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 207 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-23 21:08:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-23 21:08:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 49 states have internal predecessors, (51), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 21:08:13,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2023-11-23 21:08:13,164 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 37 [2023-11-23 21:08:13,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:13,165 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2023-11-23 21:08:13,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:08:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2023-11-23 21:08:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:08:13,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:13,172 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:13,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:08:13,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:13,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash -369495882, now seen corresponding path program 1 times [2023-11-23 21:08:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143920929] [2023-11-23 21:08:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:08:13,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143920929] [2023-11-23 21:08:13,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143920929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117746819] [2023-11-23 21:08:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:13,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:13,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:13,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:13,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:08:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:13,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:08:13,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:08:13,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:13,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117746819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:13,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:08:13,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 21:08:13,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632678533] [2023-11-23 21:08:13,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:13,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:13,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:13,504 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:08:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:13,534 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2023-11-23 21:08:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:13,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2023-11-23 21:08:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:13,536 INFO L225 Difference]: With dead ends: 98 [2023-11-23 21:08:13,536 INFO L226 Difference]: Without dead ends: 66 [2023-11-23 21:08:13,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:13,537 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:13,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:13,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-23 21:08:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-23 21:08:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 49 states have internal predecessors, (50), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 21:08:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2023-11-23 21:08:13,544 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 46 [2023-11-23 21:08:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:13,545 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2023-11-23 21:08:13,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:08:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2023-11-23 21:08:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:08:13,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:13,547 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:13,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:13,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:13,773 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:13,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash 525816032, now seen corresponding path program 1 times [2023-11-23 21:08:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281038557] [2023-11-23 21:08:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:13,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 21:08:13,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281038557] [2023-11-23 21:08:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281038557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:13,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338163240] [2023-11-23 21:08:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:13,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:13,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:13,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:13,892 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:08:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:13,943 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2023-11-23 21:08:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:13,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-11-23 21:08:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:13,947 INFO L225 Difference]: With dead ends: 67 [2023-11-23 21:08:13,947 INFO L226 Difference]: Without dead ends: 66 [2023-11-23 21:08:13,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:13,950 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:13,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 207 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-23 21:08:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-23 21:08:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 48 states have internal predecessors, (49), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 21:08:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2023-11-23 21:08:13,961 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 50 [2023-11-23 21:08:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:13,962 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2023-11-23 21:08:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:08:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2023-11-23 21:08:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:13,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:13,967 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:13,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:08:13,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:13,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -879572052, now seen corresponding path program 1 times [2023-11-23 21:08:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099307288] [2023-11-23 21:08:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 21:08:14,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099307288] [2023-11-23 21:08:14,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099307288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:14,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:14,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:14,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576634800] [2023-11-23 21:08:14,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:14,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:14,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:14,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:14,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:14,070 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:08:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:14,111 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2023-11-23 21:08:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:14,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2023-11-23 21:08:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:14,112 INFO L225 Difference]: With dead ends: 74 [2023-11-23 21:08:14,112 INFO L226 Difference]: Without dead ends: 73 [2023-11-23 21:08:14,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:14,113 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 4 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:14,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 217 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-23 21:08:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2023-11-23 21:08:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.2) internal successors, (54), 51 states have internal predecessors, (54), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:08:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2023-11-23 21:08:14,121 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 51 [2023-11-23 21:08:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:14,121 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2023-11-23 21:08:14,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:08:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2023-11-23 21:08:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 21:08:14,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:14,122 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:14,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:08:14,123 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:14,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1683757602, now seen corresponding path program 1 times [2023-11-23 21:08:14,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:14,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597952859] [2023-11-23 21:08:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:14,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 21:08:14,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:14,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597952859] [2023-11-23 21:08:14,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597952859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:14,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:14,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:08:14,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410689511] [2023-11-23 21:08:14,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:14,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:14,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:14,220 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 21:08:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:14,246 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2023-11-23 21:08:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:14,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 54 [2023-11-23 21:08:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:14,249 INFO L225 Difference]: With dead ends: 88 [2023-11-23 21:08:14,249 INFO L226 Difference]: Without dead ends: 63 [2023-11-23 21:08:14,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:14,251 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:14,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-23 21:08:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-23 21:08:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.146341463414634) internal successors, (47), 46 states have internal predecessors, (47), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:08:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2023-11-23 21:08:14,259 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 54 [2023-11-23 21:08:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:14,259 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2023-11-23 21:08:14,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 21:08:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2023-11-23 21:08:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:08:14,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:14,262 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:08:14,262 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:14,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash -758217935, now seen corresponding path program 1 times [2023-11-23 21:08:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:14,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612520592] [2023-11-23 21:08:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 21:08:14,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612520592] [2023-11-23 21:08:14,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612520592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111582062] [2023-11-23 21:08:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:14,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:14,376 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:14,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:08:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:14,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:08:14,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 21:08:14,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111582062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:14,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:08:14,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 21:08:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380198929] [2023-11-23 21:08:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:14,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:14,570 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:08:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:14,616 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2023-11-23 21:08:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:14,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2023-11-23 21:08:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:14,617 INFO L225 Difference]: With dead ends: 75 [2023-11-23 21:08:14,618 INFO L226 Difference]: Without dead ends: 63 [2023-11-23 21:08:14,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:14,619 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:14,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-23 21:08:14,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-23 21:08:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 46 states have internal predecessors, (46), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:08:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-11-23 21:08:14,623 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 60 [2023-11-23 21:08:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:14,624 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-11-23 21:08:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:08:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-11-23 21:08:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 21:08:14,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:14,625 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:14,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:14,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:08:14,848 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 21:08:14,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash -203884944, now seen corresponding path program 1 times [2023-11-23 21:08:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163711464] [2023-11-23 21:08:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 21:08:15,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:15,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163711464] [2023-11-23 21:08:15,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163711464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:15,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497458238] [2023-11-23 21:08:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:15,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:15,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:15,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a3e10d-08a8-4278-bfe1-8ea0e6dbfe49/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:08:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:15,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:08:15,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 21:08:15,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 21:08:15,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497458238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:15,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089089025] [2023-11-23 21:08:15,432 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-11-23 21:08:15,432 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:08:15,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:08:15,442 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:08:15,442 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:08:23,029 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsTrue with input of size 24 for LOIs [2023-11-23 21:08:23,033 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 158 for LOIs [2023-11-23 21:08:23,099 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsFalse with input of size 171 for LOIs [2023-11-23 21:08:23,253 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 30 for LOIs [2023-11-23 21:08:23,261 INFO L180 IcfgInterpreter]: Interpretation finished