./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/od-3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/od-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8a997af929127373cb395687e4393c920ac8d64592c7d6de23ea302f85930f8b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:13:37,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:13:37,090 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:13:37,097 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:13:37,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:13:37,125 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:13:37,126 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:13:37,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:13:37,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:13:37,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:13:37,129 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:13:37,130 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:13:37,131 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:13:37,131 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:13:37,132 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:13:37,133 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:13:37,133 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:13:37,134 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:13:37,135 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:13:37,135 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:13:37,136 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:13:37,137 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:13:37,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:13:37,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:13:37,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:13:37,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:13:37,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:13:37,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:13:37,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:13:37,141 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:13:37,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:13:37,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:13:37,143 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:13:37,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:13:37,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:13:37,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:13:37,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:13:37,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:13:37,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:13:37,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:13:37,147 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:13:37,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:13:37,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:13:37,148 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:13:37,149 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:13:37,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:13:37,150 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_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a997af929127373cb395687e4393c920ac8d64592c7d6de23ea302f85930f8b [2023-11-24 23:13:37,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:13:37,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:13:37,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:13:37,515 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:13:37,516 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:13:37,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/od-3.i [2023-11-24 23:13:40,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:13:41,344 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:13:41,345 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/sv-benchmarks/c/busybox-1.22.0/od-3.i [2023-11-24 23:13:41,387 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/data/5154821c6/a1ea8a87016246f9b9b480da839c5170/FLAG1d5050109 [2023-11-24 23:13:41,403 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/data/5154821c6/a1ea8a87016246f9b9b480da839c5170 [2023-11-24 23:13:41,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:13:41,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:13:41,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:13:41,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:13:41,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:13:41,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:13:41" (1/1) ... [2023-11-24 23:13:41,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2329d92c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:41, skipping insertion in model container [2023-11-24 23:13:41,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:13:41" (1/1) ... [2023-11-24 23:13:41,517 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:13:43,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:13:43,942 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:13:44,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:13:44,659 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,660 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,660 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,660 WARN L675 CHandler]: The function format_address is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,660 WARN L675 CHandler]: The function fseek is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,660 WARN L675 CHandler]: The function fread is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,660 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,660 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,661 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,661 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,661 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,661 WARN L675 CHandler]: The function setbuf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,661 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,661 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,661 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,662 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:13:44,670 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:13:44,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44 WrapperNode [2023-11-24 23:13:44,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:13:44,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:13:44,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:13:44,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:13:44,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:44,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,043 INFO L138 Inliner]: procedures = 692, calls = 1693, calls flagged for inlining = 56, calls inlined = 54, statements flattened = 4689 [2023-11-24 23:13:45,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:13:45,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:13:45,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:13:45,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:13:45,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:13:45,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:13:45,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:13:45,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:13:45,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (1/1) ... [2023-11-24 23:13:45,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:13:45,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:13:45,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:13:45,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:13:45,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-24 23:13:45,474 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-24 23:13:45,475 INFO L130 BoogieDeclarations]: Found specification of procedure open_next_file [2023-11-24 23:13:45,476 INFO L138 BoogieDeclarations]: Found implementation of procedure open_next_file [2023-11-24 23:13:45,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-24 23:13:45,476 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-24 23:13:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-24 23:13:45,477 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-24 23:13:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:13:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-24 23:13:45,478 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-24 23:13:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:13:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:13:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtou [2023-11-24 23:13:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtou [2023-11-24 23:13:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-24 23:13:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-11-24 23:13:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-24 23:13:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-24 23:13:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:13:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:13:45,481 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:13:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-24 23:13:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:13:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2023-11-24 23:13:45,481 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2023-11-24 23:13:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:13:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:13:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-24 23:13:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_std [2023-11-24 23:13:45,482 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_std [2023-11-24 23:13:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:13:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:13:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure check_and_close [2023-11-24 23:13:45,483 INFO L138 BoogieDeclarations]: Found implementation of procedure check_and_close [2023-11-24 23:13:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:13:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2023-11-24 23:13:45,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2023-11-24 23:13:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:13:45,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:13:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:13:45,484 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:13:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:13:45,484 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:13:45,485 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-11-24 23:13:45,485 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-24 23:13:45,486 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-24 23:13:45,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:13:45,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:13:45,487 INFO L130 BoogieDeclarations]: Found specification of procedure decode_format_string [2023-11-24 23:13:45,488 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_format_string [2023-11-24 23:13:45,488 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-24 23:13:45,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:13:45,488 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:13:45,488 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2023-11-24 23:13:45,488 INFO L138 BoogieDeclarations]: Found implementation of procedure fstat [2023-11-24 23:13:45,488 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:13:45,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:13:45,489 INFO L130 BoogieDeclarations]: Found specification of procedure parse_old_offset [2023-11-24 23:13:45,490 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_old_offset [2023-11-24 23:13:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:13:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:13:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-24 23:13:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:13:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-24 23:13:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure get_lcm [2023-11-24 23:13:45,491 INFO L138 BoogieDeclarations]: Found implementation of procedure get_lcm [2023-11-24 23:13:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-24 23:13:45,492 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-24 23:13:45,492 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-11-24 23:13:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-24 23:13:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:13:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_sfx [2023-11-24 23:13:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_sfx [2023-11-24 23:13:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-24 23:13:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_paren [2023-11-24 23:13:45,495 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_paren [2023-11-24 23:13:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtou_range_sfx [2023-11-24 23:13:45,495 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtou_range_sfx [2023-11-24 23:13:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure write_block [2023-11-24 23:13:45,496 INFO L138 BoogieDeclarations]: Found implementation of procedure write_block [2023-11-24 23:13:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-24 23:13:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:13:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:13:45,496 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:13:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure xasprintf [2023-11-24 23:13:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure xasprintf [2023-11-24 23:13:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:13:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-24 23:13:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-24 23:13:46,244 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:13:46,247 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:13:52,008 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:13:53,745 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:13:53,745 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-24 23:13:53,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:13:53 BoogieIcfgContainer [2023-11-24 23:13:53,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:13:53,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:13:53,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:13:53,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:13:53,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:13:41" (1/3) ... [2023-11-24 23:13:53,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444b1918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:13:53, skipping insertion in model container [2023-11-24 23:13:53,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:13:44" (2/3) ... [2023-11-24 23:13:53,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444b1918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:13:53, skipping insertion in model container [2023-11-24 23:13:53,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:13:53" (3/3) ... [2023-11-24 23:13:53,765 INFO L112 eAbstractionObserver]: Analyzing ICFG od-3.i [2023-11-24 23:13:53,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:13:53,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 147 error locations. [2023-11-24 23:13:53,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:13:53,917 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;@49b411b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:13:53,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2023-11-24 23:13:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 798 states have (on average 1.6428571428571428) internal successors, (1311), 1015 states have internal predecessors, (1311), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-24 23:13:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:13:53,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:13:53,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:13:53,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-24 23:13:53,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:13:53,948 INFO L85 PathProgramCache]: Analyzing trace with hash 4476760, now seen corresponding path program 1 times [2023-11-24 23:13:53,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:13:53,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029886630] [2023-11-24 23:13:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:13:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:13:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:13:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:13:54,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:13:54,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029886630] [2023-11-24 23:13:54,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029886630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:13:54,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:13:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:13:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700352071] [2023-11-24 23:13:54,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:13:54,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:13:54,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:13:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:13:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:13:55,024 INFO L87 Difference]: Start difference. First operand has 1137 states, 798 states have (on average 1.6428571428571428) internal successors, (1311), 1015 states have internal predecessors, (1311), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:13:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:13:56,750 INFO L93 Difference]: Finished difference Result 2178 states and 3235 transitions. [2023-11-24 23:13:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:13:56,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:13:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:13:56,794 INFO L225 Difference]: With dead ends: 2178 [2023-11-24 23:13:56,795 INFO L226 Difference]: Without dead ends: 994 [2023-11-24 23:13:56,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:13:56,819 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 1 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:13:56,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2480 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 23:13:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-11-24 23:13:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 994. [2023-11-24 23:13:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 746 states have (on average 1.497319034852547) internal successors, (1117), 904 states have internal predecessors, (1117), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-24 23:13:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1299 transitions. [2023-11-24 23:13:56,968 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1299 transitions. Word has length 3 [2023-11-24 23:13:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:13:56,968 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1299 transitions. [2023-11-24 23:13:56,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:13:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1299 transitions. [2023-11-24 23:13:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:13:56,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:13:56,969 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:13:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:13:56,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-24 23:13:56,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:13:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash 225007877, now seen corresponding path program 1 times [2023-11-24 23:13:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:13:56,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129357059] [2023-11-24 23:13:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:13:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:13:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:13:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:13:57,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:13:57,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129357059] [2023-11-24 23:13:57,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129357059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:13:57,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488723016] [2023-11-24 23:13:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:13:57,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:13:57,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:13:57,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:13:57,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:13:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:13:58,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:13:58,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:13:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:13:58,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:13:58,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488723016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:13:58,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:13:58,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:13:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234080229] [2023-11-24 23:13:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:13:58,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:13:58,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:13:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:13:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:13:58,553 INFO L87 Difference]: Start difference. First operand 994 states and 1299 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:01,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:14:02,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:02,555 INFO L93 Difference]: Finished difference Result 994 states and 1299 transitions. [2023-11-24 23:14:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:14:02,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:14:02,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:02,568 INFO L225 Difference]: With dead ends: 994 [2023-11-24 23:14:02,568 INFO L226 Difference]: Without dead ends: 993 [2023-11-24 23:14:02,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:02,577 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 2 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:02,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3429 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 451 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2023-11-24 23:14:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2023-11-24 23:14:02,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 993. [2023-11-24 23:14:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 746 states have (on average 1.4959785522788205) internal successors, (1116), 903 states have internal predecessors, (1116), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-24 23:14:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1298 transitions. [2023-11-24 23:14:02,670 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1298 transitions. Word has length 6 [2023-11-24 23:14:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:02,671 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1298 transitions. [2023-11-24 23:14:02,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:02,671 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1298 transitions. [2023-11-24 23:14:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:14:02,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:02,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:14:02,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:14:02,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:02,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-24 23:14:02,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1614688555, now seen corresponding path program 1 times [2023-11-24 23:14:02,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:02,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478289766] [2023-11-24 23:14:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:02,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:14:03,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478289766] [2023-11-24 23:14:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478289766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:03,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:14:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151681607] [2023-11-24 23:14:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:03,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:03,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:03,232 INFO L87 Difference]: Start difference. First operand 993 states and 1298 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:04,751 INFO L93 Difference]: Finished difference Result 993 states and 1298 transitions. [2023-11-24 23:14:04,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:04,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:14:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:04,759 INFO L225 Difference]: With dead ends: 993 [2023-11-24 23:14:04,761 INFO L226 Difference]: Without dead ends: 992 [2023-11-24 23:14:04,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:04,763 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 0 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:04,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2286 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:14:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-11-24 23:14:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 990. [2023-11-24 23:14:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 744 states have (on average 1.4959677419354838) internal successors, (1113), 900 states have internal predecessors, (1113), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-24 23:14:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1295 transitions. [2023-11-24 23:14:04,822 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1295 transitions. Word has length 7 [2023-11-24 23:14:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:04,822 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1295 transitions. [2023-11-24 23:14:04,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:04,822 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1295 transitions. [2023-11-24 23:14:04,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:14:04,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:04,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:04,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:14:04,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-24 23:14:04,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1625925060, now seen corresponding path program 1 times [2023-11-24 23:14:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:04,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33869198] [2023-11-24 23:14:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:05,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33869198] [2023-11-24 23:14:05,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33869198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:05,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395575289] [2023-11-24 23:14:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:05,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:05,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:05,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:05,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:14:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:06,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:14:06,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:14:06,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:06,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395575289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:06,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:14:06,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:14:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453266254] [2023-11-24 23:14:06,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:06,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:06,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:06,153 INFO L87 Difference]: Start difference. First operand 990 states and 1295 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:14:07,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:07,751 INFO L93 Difference]: Finished difference Result 990 states and 1295 transitions. [2023-11-24 23:14:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:07,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-24 23:14:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:07,761 INFO L225 Difference]: With dead ends: 990 [2023-11-24 23:14:07,761 INFO L226 Difference]: Without dead ends: 988 [2023-11-24 23:14:07,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:07,763 INFO L413 NwaCegarLoop]: 1136 mSDtfsCounter, 597 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:07,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1706 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:14:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-11-24 23:14:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 988. [2023-11-24 23:14:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 744 states have (on average 1.493279569892473) internal successors, (1111), 898 states have internal predecessors, (1111), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-24 23:14:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1293 transitions. [2023-11-24 23:14:07,818 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1293 transitions. Word has length 9 [2023-11-24 23:14:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:07,820 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1293 transitions. [2023-11-24 23:14:07,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:14:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1293 transitions. [2023-11-24 23:14:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:14:07,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:07,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:07,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:08,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:08,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-24 23:14:08,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:08,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1135928833, now seen corresponding path program 1 times [2023-11-24 23:14:08,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:08,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699341889] [2023-11-24 23:14:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:08,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699341889] [2023-11-24 23:14:08,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699341889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534548698] [2023-11-24 23:14:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:08,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:08,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:08,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceae28f-6b02-491d-b734-d54bbb4815c7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:14:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:09,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:09,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:09,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:14:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:09,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534548698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:14:09,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1725664032] [2023-11-24 23:14:09,456 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:14:09,457 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:14:09,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:14:09,465 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:14:09,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs