./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/du-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/du-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ --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 ce5a5150794f26ae689cf42e8d4fe19a475595db60f71953dedd9d34b6b2f115 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:36,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:36,805 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:24:36,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:36,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:36,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:36,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:36,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:36,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:36,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:36,842 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:36,843 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:36,843 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:36,844 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:24:36,845 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:36,845 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:36,846 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:24:36,846 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:24:36,847 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:36,848 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:24:36,848 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:24:36,849 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:24:36,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:36,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:36,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:24:36,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:36,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:36,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:36,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:36,853 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:24:36,854 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:24:36,854 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:36,855 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:36,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:36,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:36,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:36,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:36,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:36,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:24:36,857 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:24:36,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:24:36,858 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:24:36,858 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:36,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:36,859 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_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5a5150794f26ae689cf42e8d4fe19a475595db60f71953dedd9d34b6b2f115 [2023-11-19 05:24:37,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:37,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:37,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:37,253 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:37,253 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:37,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/du-1.i [2023-11-19 05:24:40,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:41,009 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:41,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/sv-benchmarks/c/busybox-1.22.0/du-1.i [2023-11-19 05:24:41,046 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/data/48773f317/d53dfe4e99a64c078a997bb849a02aeb/FLAG31287ef58 [2023-11-19 05:24:41,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/data/48773f317/d53dfe4e99a64c078a997bb849a02aeb [2023-11-19 05:24:41,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:41,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:41,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:41,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:41,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:41,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:41" (1/1) ... [2023-11-19 05:24:41,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e55c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:41, skipping insertion in model container [2023-11-19 05:24:41,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:41" (1/1) ... [2023-11-19 05:24:41,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:43,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:43,249 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:24:43,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:43,791 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:24:43,792 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:24:43,792 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:24:43,793 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:24:43,802 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:24:43,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43 WrapperNode [2023-11-19 05:24:43,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:43,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:43,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:24:43,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:24:43,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:43,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,104 INFO L138 Inliner]: procedures = 670, calls = 592, calls flagged for inlining = 35, calls inlined = 33, statements flattened = 2265 [2023-11-19 05:24:44,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:44,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:24:44,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:24:44,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:24:44,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:24:44,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:24:44,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:24:44,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:24:44,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (1/1) ... [2023-11-19 05:24:44,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:44,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:44,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:24:44,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:24:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 05:24:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 05:24:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:24:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure du [2023-11-19 05:24:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure du [2023-11-19 05:24:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 05:24:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:24:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-19 05:24:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-19 05:24:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure print [2023-11-19 05:24:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure print [2023-11-19 05:24:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:24:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 05:24:44,436 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 05:24:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:24:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:24:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:24:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 05:24:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:24:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:24:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:24:44,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:24:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:24:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:24:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 05:24:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 05:24:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:24:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:24:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 05:24:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 05:24:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-19 05:24:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-19 05:24:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:24:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:24:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:24:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:24:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:24:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:24:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:24:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:24:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-19 05:24:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-19 05:24:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 05:24:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 05:24:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 05:24:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:24:45,010 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:24:45,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:24:47,286 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:24:48,294 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:24:48,294 INFO L302 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-19 05:24:48,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:48 BoogieIcfgContainer [2023-11-19 05:24:48,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:24:48,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:24:48,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:24:48,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:24:48,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:24:41" (1/3) ... [2023-11-19 05:24:48,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772bdf74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:48, skipping insertion in model container [2023-11-19 05:24:48,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:43" (2/3) ... [2023-11-19 05:24:48,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772bdf74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:48, skipping insertion in model container [2023-11-19 05:24:48,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:48" (3/3) ... [2023-11-19 05:24:48,328 INFO L112 eAbstractionObserver]: Analyzing ICFG du-1.i [2023-11-19 05:24:48,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:24:48,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-19 05:24:48,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:48,444 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;@25b93672, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:48,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-11-19 05:24:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 492 states, 367 states have (on average 1.659400544959128) internal successors, (609), 437 states have internal predecessors, (609), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-19 05:24:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:24:48,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:48,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:24:48,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:24:48,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2164148, now seen corresponding path program 1 times [2023-11-19 05:24:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:48,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917776808] [2023-11-19 05:24:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:49,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:49,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917776808] [2023-11-19 05:24:49,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917776808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:49,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:24:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589558023] [2023-11-19 05:24:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:49,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:49,103 INFO L87 Difference]: Start difference. First operand has 492 states, 367 states have (on average 1.659400544959128) internal successors, (609), 437 states have internal predecessors, (609), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:50,145 INFO L93 Difference]: Finished difference Result 977 states and 1408 transitions. [2023-11-19 05:24:50,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:50,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:24:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:50,163 INFO L225 Difference]: With dead ends: 977 [2023-11-19 05:24:50,163 INFO L226 Difference]: Without dead ends: 487 [2023-11-19 05:24:50,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:50,174 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:50,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1128 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:24:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-19 05:24:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2023-11-19 05:24:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 364 states have (on average 1.585164835164835) internal successors, (577), 438 states have internal predecessors, (577), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:24:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 657 transitions. [2023-11-19 05:24:50,295 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 657 transitions. Word has length 3 [2023-11-19 05:24:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:50,296 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 657 transitions. [2023-11-19 05:24:50,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 657 transitions. [2023-11-19 05:24:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:24:50,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:50,299 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 05:24:50,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:24:50,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:24:50,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash 48432766, now seen corresponding path program 1 times [2023-11-19 05:24:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:50,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910123777] [2023-11-19 05:24:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:50,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910123777] [2023-11-19 05:24:50,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910123777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:24:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683240579] [2023-11-19 05:24:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:50,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:50,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:50,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:50,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:24:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:50,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:24:50,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:50,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:24:50,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683240579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:50,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:24:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 05:24:50,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015831393] [2023-11-19 05:24:50,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:50,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:24:50,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:24:51,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:24:51,002 INFO L87 Difference]: Start difference. First operand 487 states and 657 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:52,005 INFO L93 Difference]: Finished difference Result 487 states and 657 transitions. [2023-11-19 05:24:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:24:52,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:24:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:52,011 INFO L225 Difference]: With dead ends: 487 [2023-11-19 05:24:52,011 INFO L226 Difference]: Without dead ends: 486 [2023-11-19 05:24:52,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:24:52,013 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 3 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:52,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1124 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 05:24:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-19 05:24:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2023-11-19 05:24:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 364 states have (on average 1.5824175824175823) internal successors, (576), 437 states have internal predecessors, (576), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:24:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 656 transitions. [2023-11-19 05:24:52,037 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 656 transitions. Word has length 6 [2023-11-19 05:24:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:52,038 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 656 transitions. [2023-11-19 05:24:52,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 656 transitions. [2023-11-19 05:24:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:24:52,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:52,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 05:24:52,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:24:52,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:52,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:24:52,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1501416561, now seen corresponding path program 1 times [2023-11-19 05:24:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:52,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151900987] [2023-11-19 05:24:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:52,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:24:52,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151900987] [2023-11-19 05:24:52,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151900987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:52,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:52,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:24:52,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46222662] [2023-11-19 05:24:52,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:52,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:52,481 INFO L87 Difference]: Start difference. First operand 486 states and 656 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:53,654 INFO L93 Difference]: Finished difference Result 486 states and 656 transitions. [2023-11-19 05:24:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:24:53,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:53,659 INFO L225 Difference]: With dead ends: 486 [2023-11-19 05:24:53,659 INFO L226 Difference]: Without dead ends: 485 [2023-11-19 05:24:53,660 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 [2023-11-19 05:24:53,661 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 0 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:53,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1124 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:24:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-11-19 05:24:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2023-11-19 05:24:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 362 states have (on average 1.5828729281767955) internal successors, (573), 434 states have internal predecessors, (573), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:24:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 653 transitions. [2023-11-19 05:24:53,690 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 653 transitions. Word has length 7 [2023-11-19 05:24:53,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:53,690 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 653 transitions. [2023-11-19 05:24:53,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 653 transitions. [2023-11-19 05:24:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:24:53,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:53,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:53,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:24:53,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:24:53,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:53,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1200760081, now seen corresponding path program 1 times [2023-11-19 05:24:53,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:53,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036061604] [2023-11-19 05:24:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:53,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:53,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:53,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036061604] [2023-11-19 05:24:53,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036061604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:24:53,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022916350] [2023-11-19 05:24:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:53,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:53,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:53,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:53,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:24:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:54,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:24:54,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:24:54,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:24:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022916350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:54,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:24:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:24:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298094277] [2023-11-19 05:24:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:54,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:24:54,223 INFO L87 Difference]: Start difference. First operand 483 states and 653 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:24:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:54,825 INFO L93 Difference]: Finished difference Result 483 states and 653 transitions. [2023-11-19 05:24:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-19 05:24:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:54,830 INFO L225 Difference]: With dead ends: 483 [2023-11-19 05:24:54,830 INFO L226 Difference]: Without dead ends: 481 [2023-11-19 05:24:54,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:24:54,831 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 309 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:54,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 845 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:24:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-11-19 05:24:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2023-11-19 05:24:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 362 states have (on average 1.5773480662983426) internal successors, (571), 432 states have internal predecessors, (571), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:24:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 651 transitions. [2023-11-19 05:24:54,866 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 651 transitions. Word has length 9 [2023-11-19 05:24:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:54,867 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 651 transitions. [2023-11-19 05:24:54,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:24:54,868 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 651 transitions. [2023-11-19 05:24:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:24:54,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:54,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:54,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:24:55,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:55,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:24:55,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1431142329, now seen corresponding path program 1 times [2023-11-19 05:24:55,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:55,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322327374] [2023-11-19 05:24:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:55,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:55,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322327374] [2023-11-19 05:24:55,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322327374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:24:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321385093] [2023-11-19 05:24:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:55,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:55,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:55,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:24:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:55,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:24:55,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:55,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321385093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:24:55,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1345670154] [2023-11-19 05:24:55,721 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:24:55,721 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:24:55,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:24:55,730 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:24:55,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:25:10,963 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 142 for LOIs [2023-11-19 05:25:11,059 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:25:13,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1345670154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:13,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:25:13,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-19 05:25:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976332407] [2023-11-19 05:25:13,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:13,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:25:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:13,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:25:13,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:25:13,749 INFO L87 Difference]: Start difference. First operand 481 states and 651 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:22,051 INFO L93 Difference]: Finished difference Result 483 states and 652 transitions. [2023-11-19 05:25:22,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:25:22,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-19 05:25:22,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:22,055 INFO L225 Difference]: With dead ends: 483 [2023-11-19 05:25:22,055 INFO L226 Difference]: Without dead ends: 481 [2023-11-19 05:25:22,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:25:22,058 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 3 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:22,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2224 Invalid, 1006 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-11-19 05:25:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-11-19 05:25:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2023-11-19 05:25:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 363 states have (on average 1.5702479338842976) internal successors, (570), 431 states have internal predecessors, (570), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:25:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 650 transitions. [2023-11-19 05:25:22,084 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 650 transitions. Word has length 10 [2023-11-19 05:25:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:22,084 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 650 transitions. [2023-11-19 05:25:22,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 650 transitions. [2023-11-19 05:25:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:25:22,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:22,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:22,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:22,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:22,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:25:22,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1224946349, now seen corresponding path program 1 times [2023-11-19 05:25:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:22,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158184051] [2023-11-19 05:25:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:22,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:22,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158184051] [2023-11-19 05:25:22,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158184051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:22,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373850129] [2023-11-19 05:25:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:22,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:22,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:22,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:22,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:25:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:22,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:25:22,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:25:22,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373850129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:25:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:25:22,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261999877] [2023-11-19 05:25:22,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:22,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:25:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:25:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:22,878 INFO L87 Difference]: Start difference. First operand 481 states and 650 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:23,643 INFO L93 Difference]: Finished difference Result 481 states and 650 transitions. [2023-11-19 05:25:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:25:23,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-19 05:25:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:23,648 INFO L225 Difference]: With dead ends: 481 [2023-11-19 05:25:23,648 INFO L226 Difference]: Without dead ends: 480 [2023-11-19 05:25:23,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:23,650 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 7 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:23,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1105 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:25:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-11-19 05:25:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2023-11-19 05:25:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 363 states have (on average 1.5674931129476584) internal successors, (569), 430 states have internal predecessors, (569), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:25:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 649 transitions. [2023-11-19 05:25:23,677 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 649 transitions. Word has length 15 [2023-11-19 05:25:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:23,678 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 649 transitions. [2023-11-19 05:25:23,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 649 transitions. [2023-11-19 05:25:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:25:23,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:23,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:23,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:23,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:25:23,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:25:23,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:23,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1224898910, now seen corresponding path program 1 times [2023-11-19 05:25:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696397226] [2023-11-19 05:25:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:24,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:24,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696397226] [2023-11-19 05:25:24,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696397226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:24,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208774810] [2023-11-19 05:25:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:24,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:24,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:24,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:24,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:25:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:24,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:25:24,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:25:24,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:24,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208774810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:24,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:25:24,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:25:24,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309650027] [2023-11-19 05:25:24,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:25:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:25:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:24,528 INFO L87 Difference]: Start difference. First operand 480 states and 649 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:25,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:25,176 INFO L93 Difference]: Finished difference Result 480 states and 649 transitions. [2023-11-19 05:25:25,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:25:25,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-19 05:25:25,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:25,180 INFO L225 Difference]: With dead ends: 480 [2023-11-19 05:25:25,181 INFO L226 Difference]: Without dead ends: 479 [2023-11-19 05:25:25,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:25,182 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 2 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:25,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1109 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:25:25,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-19 05:25:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2023-11-19 05:25:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 363 states have (on average 1.5647382920110193) internal successors, (568), 429 states have internal predecessors, (568), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:25:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 648 transitions. [2023-11-19 05:25:25,208 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 648 transitions. Word has length 15 [2023-11-19 05:25:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:25,208 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 648 transitions. [2023-11-19 05:25:25,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 648 transitions. [2023-11-19 05:25:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:25:25,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:25,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:25,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 05:25:25,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:25,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:25:25,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash -681367987, now seen corresponding path program 1 times [2023-11-19 05:25:25,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:25,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932049316] [2023-11-19 05:25:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:25,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932049316] [2023-11-19 05:25:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932049316] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495594024] [2023-11-19 05:25:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:25,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:25,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:25,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:25:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:25,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:25:26,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:25:26,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495594024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:26,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:25:26,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:25:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94062861] [2023-11-19 05:25:26,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:26,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:25:26,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:25:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:26,015 INFO L87 Difference]: Start difference. First operand 479 states and 648 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:26,772 INFO L93 Difference]: Finished difference Result 487 states and 658 transitions. [2023-11-19 05:25:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:25:26,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 05:25:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:26,777 INFO L225 Difference]: With dead ends: 487 [2023-11-19 05:25:26,777 INFO L226 Difference]: Without dead ends: 486 [2023-11-19 05:25:26,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:26,778 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 4 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:26,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1108 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:25:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-19 05:25:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 485. [2023-11-19 05:25:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 369 states have (on average 1.5636856368563685) internal successors, (577), 435 states have internal predecessors, (577), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:25:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 657 transitions. [2023-11-19 05:25:26,806 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 657 transitions. Word has length 16 [2023-11-19 05:25:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:26,807 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 657 transitions. [2023-11-19 05:25:26,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 657 transitions. [2023-11-19 05:25:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:25:26,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:26,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:26,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 05:25:27,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:25:27,022 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:25:27,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash -682838605, now seen corresponding path program 1 times [2023-11-19 05:25:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:27,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650253009] [2023-11-19 05:25:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:27,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:27,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:27,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650253009] [2023-11-19 05:25:27,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650253009] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627541326] [2023-11-19 05:25:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:27,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:27,186 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:27,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:25:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:27,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:25:27,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:25:27,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:27,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627541326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:27,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:25:27,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:25:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542943937] [2023-11-19 05:25:27,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:27,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:25:27,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:27,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:25:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:27,583 INFO L87 Difference]: Start difference. First operand 485 states and 657 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:28,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:28,487 INFO L93 Difference]: Finished difference Result 960 states and 1304 transitions. [2023-11-19 05:25:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:25:28,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 05:25:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:28,491 INFO L225 Difference]: With dead ends: 960 [2023-11-19 05:25:28,491 INFO L226 Difference]: Without dead ends: 491 [2023-11-19 05:25:28,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:28,493 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:28,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1110 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:25:28,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-11-19 05:25:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2023-11-19 05:25:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 375 states have (on average 1.5546666666666666) internal successors, (583), 441 states have internal predecessors, (583), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 05:25:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 663 transitions. [2023-11-19 05:25:28,527 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 663 transitions. Word has length 16 [2023-11-19 05:25:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:28,527 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 663 transitions. [2023-11-19 05:25:28,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:25:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 663 transitions. [2023-11-19 05:25:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:25:28,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:28,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:28,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:28,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 05:25:28,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-19 05:25:28,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:28,743 INFO L85 PathProgramCache]: Analyzing trace with hash -638771694, now seen corresponding path program 1 times [2023-11-19 05:25:28,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:28,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904917745] [2023-11-19 05:25:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:28,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:28,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:28,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904917745] [2023-11-19 05:25:28,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904917745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:28,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033667608] [2023-11-19 05:25:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:28,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:28,931 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12e30f9-b326-474b-a7e7-cbff229e9080/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process