./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/fold-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_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/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_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/fold-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/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_91669455-4ae4-402d-bc5b-32be337bb29a/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 201f380b05f2f2592e2e623b47b2e89fa8ae6bbfe4280f276a262761079e1716 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:09:42,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:09:42,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:09:42,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:09:42,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:09:42,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:09:42,366 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:09:42,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:09:42,368 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:09:42,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:09:42,374 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:09:42,375 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:09:42,376 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:09:42,378 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:09:42,378 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:09:42,379 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:09:42,379 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:09:42,380 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:09:42,380 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:09:42,381 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:09:42,381 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:09:42,382 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:09:42,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:09:42,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:09:42,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:09:42,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:09:42,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:09:42,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:09:42,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:09:42,387 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:09:42,388 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:09:42,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:09:42,389 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:09:42,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:09:42,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:09:42,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:09:42,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:09:42,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:09:42,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:09:42,391 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:09:42,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:09:42,392 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:09:42,392 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:09:42,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:09:42,393 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_91669455-4ae4-402d-bc5b-32be337bb29a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 201f380b05f2f2592e2e623b47b2e89fa8ae6bbfe4280f276a262761079e1716 [2023-11-19 04:09:42,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:09:42,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:09:42,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:09:42,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:09:42,796 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:09:42,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/fold-1.i [2023-11-19 04:09:45,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:09:46,493 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:09:46,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/sv-benchmarks/c/busybox-1.22.0/fold-1.i [2023-11-19 04:09:46,534 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/data/d4afb0676/3a3b2ce5815b4bea825e3ad307709404/FLAGa2c19d7d5 [2023-11-19 04:09:46,552 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/data/d4afb0676/3a3b2ce5815b4bea825e3ad307709404 [2023-11-19 04:09:46,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:09:46,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:09:46,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:09:46,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:09:46,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:09:46,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:09:46" (1/1) ... [2023-11-19 04:09:46,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1a98ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:46, skipping insertion in model container [2023-11-19 04:09:46,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:09:46" (1/1) ... [2023-11-19 04:09:46,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:09:48,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:09:48,390 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:09:48,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:09:48,828 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,829 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,829 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,829 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,829 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,830 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,830 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,830 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,830 WARN L675 CHandler]: The function fwrite is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,830 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:09:48,853 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:09:48,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48 WrapperNode [2023-11-19 04:09:48,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:09:48,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:09:48,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:09:48,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:09:48,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:48,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,091 INFO L138 Inliner]: procedures = 581, calls = 481, calls flagged for inlining = 28, calls inlined = 26, statements flattened = 1821 [2023-11-19 04:09:49,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:09:49,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:09:49,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:09:49,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:09:49,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:09:49,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:09:49,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:09:49,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:09:49,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (1/1) ... [2023-11-19 04:09:49,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:09:49,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:09:49,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:09:49,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:09:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 04:09:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 04:09:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 04:09:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 04:09:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 04:09:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 04:09:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-19 04:09:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:09:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_column [2023-11-19 04:09:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_column [2023-11-19 04:09:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:09:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 04:09:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 04:09:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 04:09:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:09:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:09:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:09:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 04:09:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:09:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:09:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:09:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:09:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:09:49,406 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:09:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write2stdout [2023-11-19 04:09:49,406 INFO L138 BoogieDeclarations]: Found implementation of procedure write2stdout [2023-11-19 04:09:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 04:09:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 04:09:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:09:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:09:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 04:09:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 04:09:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 04:09:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:09:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:09:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:09:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:09:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:09:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:09:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-19 04:09:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:09:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-11-19 04:09:49,410 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-11-19 04:09:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-19 04:09:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure xatou_range [2023-11-19 04:09:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou_range [2023-11-19 04:09:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:09:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 04:09:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 04:09:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 04:09:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2023-11-19 04:09:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:09:49,995 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:09:49,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:09:51,815 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:09:52,561 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:09:52,561 INFO L302 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-19 04:09:52,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:09:52 BoogieIcfgContainer [2023-11-19 04:09:52,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:09:52,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:09:52,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:09:52,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:09:52,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:09:46" (1/3) ... [2023-11-19 04:09:52,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559b6724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:09:52, skipping insertion in model container [2023-11-19 04:09:52,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:09:48" (2/3) ... [2023-11-19 04:09:52,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559b6724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:09:52, skipping insertion in model container [2023-11-19 04:09:52,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:09:52" (3/3) ... [2023-11-19 04:09:52,578 INFO L112 eAbstractionObserver]: Analyzing ICFG fold-1.i [2023-11-19 04:09:52,597 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:09:52,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2023-11-19 04:09:52,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:09:52,663 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;@378bcc3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:09:52,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-11-19 04:09:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 452 states, 336 states have (on average 1.6696428571428572) internal successors, (561), 402 states have internal predecessors, (561), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-19 04:09:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:09:52,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:09:52,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:09:52,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:09:52,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:09:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1928044, now seen corresponding path program 1 times [2023-11-19 04:09:52,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:09:52,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545405200] [2023-11-19 04:09:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:09:52,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:09:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:09:53,279 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 04:09:53,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:09:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545405200] [2023-11-19 04:09:53,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545405200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:09:53,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:09:53,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:09:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348624972] [2023-11-19 04:09:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:09:53,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:09:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:09:53,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:09:53,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:09:53,359 INFO L87 Difference]: Start difference. First operand has 452 states, 336 states have (on average 1.6696428571428572) internal successors, (561), 402 states have internal predecessors, (561), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) 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 04:09:53,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:09:53,814 INFO L93 Difference]: Finished difference Result 889 states and 1273 transitions. [2023-11-19 04:09:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:09:53,817 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 04:09:53,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:09:53,832 INFO L225 Difference]: With dead ends: 889 [2023-11-19 04:09:53,832 INFO L226 Difference]: Without dead ends: 439 [2023-11-19 04:09:53,840 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 04:09:53,843 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:09:53,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1000 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:09:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-11-19 04:09:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2023-11-19 04:09:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 329 states have (on average 1.5775075987841944) internal successors, (519), 397 states have internal predecessors, (519), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:09:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 585 transitions. [2023-11-19 04:09:53,944 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 585 transitions. Word has length 3 [2023-11-19 04:09:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:09:53,945 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 585 transitions. [2023-11-19 04:09:53,945 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 04:09:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 585 transitions. [2023-11-19 04:09:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:09:53,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:09:53,946 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:09:53,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:09:53,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:09:53,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:09:53,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1604184971, now seen corresponding path program 1 times [2023-11-19 04:09:53,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:09:53,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870674652] [2023-11-19 04:09:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:09:53,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:09:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:09:54,171 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 04:09:54,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:09:54,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870674652] [2023-11-19 04:09:54,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870674652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:09:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395288145] [2023-11-19 04:09:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:09:54,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:09:54,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:09:54,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:09:54,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:09:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:09:54,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:09:54,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:09:54,611 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 04:09:54,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:09:54,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395288145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:09:54,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:09:54,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 04:09:54,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959607504] [2023-11-19 04:09:54,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:09:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:09:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:09:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:09:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:09:54,627 INFO L87 Difference]: Start difference. First operand 439 states and 585 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 04:09:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:09:55,139 INFO L93 Difference]: Finished difference Result 439 states and 585 transitions. [2023-11-19 04:09:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:09:55,140 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 04:09:55,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:09:55,147 INFO L225 Difference]: With dead ends: 439 [2023-11-19 04:09:55,147 INFO L226 Difference]: Without dead ends: 438 [2023-11-19 04:09:55,148 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 04:09:55,149 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:09:55,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1494 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:09:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-19 04:09:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2023-11-19 04:09:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 329 states have (on average 1.574468085106383) internal successors, (518), 396 states have internal predecessors, (518), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:09:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 584 transitions. [2023-11-19 04:09:55,204 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 584 transitions. Word has length 6 [2023-11-19 04:09:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:09:55,204 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 584 transitions. [2023-11-19 04:09:55,204 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 04:09:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 584 transitions. [2023-11-19 04:09:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:09:55,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:09:55,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 04:09:55,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:09:55,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:09:55,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:09:55,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:09:55,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1809873047, now seen corresponding path program 1 times [2023-11-19 04:09:55,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:09:55,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325847141] [2023-11-19 04:09:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:09:55,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:09:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:09:55,553 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 04:09:55,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:09:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325847141] [2023-11-19 04:09:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325847141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:09:55,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:09:55,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:09:55,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749919165] [2023-11-19 04:09:55,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:09:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:09:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:09:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:09:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:09:55,556 INFO L87 Difference]: Start difference. First operand 438 states and 584 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 04:09:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:09:55,861 INFO L93 Difference]: Finished difference Result 438 states and 584 transitions. [2023-11-19 04:09:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:09:55,861 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 04:09:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:09:55,865 INFO L225 Difference]: With dead ends: 438 [2023-11-19 04:09:55,865 INFO L226 Difference]: Without dead ends: 437 [2023-11-19 04:09:55,866 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 04:09:55,867 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 0 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:09:55,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 996 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:09:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-11-19 04:09:55,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 435. [2023-11-19 04:09:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 327 states have (on average 1.5749235474006116) internal successors, (515), 393 states have internal predecessors, (515), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:09:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 581 transitions. [2023-11-19 04:09:55,887 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 581 transitions. Word has length 7 [2023-11-19 04:09:55,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:09:55,887 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 581 transitions. [2023-11-19 04:09:55,888 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 04:09:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 581 transitions. [2023-11-19 04:09:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:09:55,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:09:55,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:09:55,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:09:55,889 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:09:55,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:09:55,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1919607250, now seen corresponding path program 1 times [2023-11-19 04:09:55,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:09:55,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626273531] [2023-11-19 04:09:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:09:55,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:09:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:09:56,076 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 04:09:56,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:09:56,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626273531] [2023-11-19 04:09:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626273531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:09:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42847471] [2023-11-19 04:09:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:09:56,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:09:56,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:09:56,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:09:56,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:09:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:09:56,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:09:56,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:09:56,442 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 04:09:56,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:09:56,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42847471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:09:56,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:09:56,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:09:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026252665] [2023-11-19 04:09:56,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:09:56,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:09:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:09:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:09:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:09:56,446 INFO L87 Difference]: Start difference. First operand 435 states and 581 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 04:09:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:09:56,743 INFO L93 Difference]: Finished difference Result 435 states and 581 transitions. [2023-11-19 04:09:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:09:56,743 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 04:09:56,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:09:56,747 INFO L225 Difference]: With dead ends: 435 [2023-11-19 04:09:56,747 INFO L226 Difference]: Without dead ends: 433 [2023-11-19 04:09:56,748 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 04:09:56,749 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 342 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:09:56,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 679 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:09:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-19 04:09:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2023-11-19 04:09:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 327 states have (on average 1.5688073394495412) internal successors, (513), 391 states have internal predecessors, (513), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:09:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 579 transitions. [2023-11-19 04:09:56,776 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 579 transitions. Word has length 9 [2023-11-19 04:09:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:09:56,777 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 579 transitions. [2023-11-19 04:09:56,778 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 04:09:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 579 transitions. [2023-11-19 04:09:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:09:56,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:09:56,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:09:56,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:09:56,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:09:56,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:09:56,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:09:56,993 INFO L85 PathProgramCache]: Analyzing trace with hash -621716981, now seen corresponding path program 1 times [2023-11-19 04:09:56,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:09:56,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417937149] [2023-11-19 04:09:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:09:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:09:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:09:57,171 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 04:09:57,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:09:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417937149] [2023-11-19 04:09:57,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417937149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:09:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252738809] [2023-11-19 04:09:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:09:57,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:09:57,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:09:57,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:09:57,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:09:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:09:57,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:09:57,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:09:57,532 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 04:09:57,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:09:57,561 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 04:09:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252738809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:09:57,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1915133905] [2023-11-19 04:09:57,583 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:09:57,583 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:09:57,587 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:09:57,593 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:09:57,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:10:07,226 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-11-19 04:10:07,278 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:10:09,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1915133905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:09,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:10:09,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-19 04:10:09,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565671143] [2023-11-19 04:10:09,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:09,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:10:09,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:10:09,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:10:09,069 INFO L87 Difference]: Start difference. First operand 433 states and 579 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:10:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:14,424 INFO L93 Difference]: Finished difference Result 435 states and 580 transitions. [2023-11-19 04:10:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:10:14,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-19 04:10:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:14,428 INFO L225 Difference]: With dead ends: 435 [2023-11-19 04:10:14,428 INFO L226 Difference]: Without dead ends: 433 [2023-11-19 04:10:14,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:10:14,430 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 4 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:14,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2863 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-19 04:10:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-19 04:10:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2023-11-19 04:10:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 328 states have (on average 1.5609756097560976) internal successors, (512), 390 states have internal predecessors, (512), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 578 transitions. [2023-11-19 04:10:14,454 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 578 transitions. Word has length 10 [2023-11-19 04:10:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:14,455 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 578 transitions. [2023-11-19 04:10:14,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:10:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 578 transitions. [2023-11-19 04:10:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:10:14,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:14,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:14,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:14,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:14,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:14,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:14,679 INFO L85 PathProgramCache]: Analyzing trace with hash 305730761, now seen corresponding path program 1 times [2023-11-19 04:10:14,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:14,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779441368] [2023-11-19 04:10:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:14,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:14,817 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 04:10:14,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779441368] [2023-11-19 04:10:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779441368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427935297] [2023-11-19 04:10:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:14,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:14,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:14,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:14,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:10:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:15,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:15,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:15,200 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 04:10:15,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:15,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427935297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:15,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:15,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471897906] [2023-11-19 04:10:15,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:15,203 INFO L87 Difference]: Start difference. First operand 433 states and 578 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 04:10:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:15,555 INFO L93 Difference]: Finished difference Result 433 states and 578 transitions. [2023-11-19 04:10:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:15,556 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 04:10:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:15,560 INFO L225 Difference]: With dead ends: 433 [2023-11-19 04:10:15,560 INFO L226 Difference]: Without dead ends: 432 [2023-11-19 04:10:15,561 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 04:10:15,562 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 7 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:15,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 977 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:10:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-19 04:10:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2023-11-19 04:10:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 328 states have (on average 1.5579268292682926) internal successors, (511), 389 states have internal predecessors, (511), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 577 transitions. [2023-11-19 04:10:15,592 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 577 transitions. Word has length 15 [2023-11-19 04:10:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:15,592 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 577 transitions. [2023-11-19 04:10:15,593 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 04:10:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 577 transitions. [2023-11-19 04:10:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:10:15,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:15,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:15,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:15,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:15,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:15,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:15,820 INFO L85 PathProgramCache]: Analyzing trace with hash 305680191, now seen corresponding path program 1 times [2023-11-19 04:10:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:15,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011520837] [2023-11-19 04:10:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:15,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:16,081 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 04:10:16,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:16,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011520837] [2023-11-19 04:10:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011520837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:16,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988513844] [2023-11-19 04:10:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:16,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:16,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:16,084 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:16,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:10:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:16,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:16,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:16,514 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 04:10:16,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:16,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988513844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:16,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:16,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:16,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498968981] [2023-11-19 04:10:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:16,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:16,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:16,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:16,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:16,519 INFO L87 Difference]: Start difference. First operand 432 states and 577 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 04:10:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:16,885 INFO L93 Difference]: Finished difference Result 432 states and 577 transitions. [2023-11-19 04:10:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:16,889 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 04:10:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:16,892 INFO L225 Difference]: With dead ends: 432 [2023-11-19 04:10:16,892 INFO L226 Difference]: Without dead ends: 431 [2023-11-19 04:10:16,893 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 04:10:16,894 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 2 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:16,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 981 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:10:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-19 04:10:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2023-11-19 04:10:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 328 states have (on average 1.5548780487804879) internal successors, (510), 388 states have internal predecessors, (510), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 576 transitions. [2023-11-19 04:10:16,931 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 576 transitions. Word has length 15 [2023-11-19 04:10:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:16,931 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 576 transitions. [2023-11-19 04:10:16,932 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 04:10:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 576 transitions. [2023-11-19 04:10:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:10:16,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:16,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:16,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:17,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 04:10:17,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:17,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 887719446, now seen corresponding path program 1 times [2023-11-19 04:10:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524928770] [2023-11-19 04:10:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:17,377 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 04:10:17,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:17,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524928770] [2023-11-19 04:10:17,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524928770] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:17,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295614393] [2023-11-19 04:10:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:17,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:17,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:17,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:17,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:10:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:17,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:17,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:17,830 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 04:10:17,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:17,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295614393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:17,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:17,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:17,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675009210] [2023-11-19 04:10:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:17,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:17,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:17,833 INFO L87 Difference]: Start difference. First operand 431 states and 576 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 04:10:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:18,213 INFO L93 Difference]: Finished difference Result 439 states and 586 transitions. [2023-11-19 04:10:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:18,214 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 04:10:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:18,217 INFO L225 Difference]: With dead ends: 439 [2023-11-19 04:10:18,218 INFO L226 Difference]: Without dead ends: 438 [2023-11-19 04:10:18,218 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 04:10:18,219 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 4 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:18,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 980 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:10:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-19 04:10:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 437. [2023-11-19 04:10:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 334 states have (on average 1.5538922155688624) internal successors, (519), 394 states have internal predecessors, (519), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 585 transitions. [2023-11-19 04:10:18,249 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 585 transitions. Word has length 16 [2023-11-19 04:10:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:18,249 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 585 transitions. [2023-11-19 04:10:18,249 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 04:10:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 585 transitions. [2023-11-19 04:10:18,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:10:18,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:18,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:18,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:18,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:10:18,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:18,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash 886151767, now seen corresponding path program 1 times [2023-11-19 04:10:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:18,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942341502] [2023-11-19 04:10:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:18,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:18,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942341502] [2023-11-19 04:10:18,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942341502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:18,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677008665] [2023-11-19 04:10:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:18,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:18,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:18,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:10:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:19,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:19,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:19,168 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 04:10:19,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:19,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677008665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:19,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:19,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025742799] [2023-11-19 04:10:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:19,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:19,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:19,170 INFO L87 Difference]: Start difference. First operand 437 states and 585 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 04:10:19,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:19,527 INFO L93 Difference]: Finished difference Result 864 states and 1160 transitions. [2023-11-19 04:10:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:19,528 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 04:10:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:19,531 INFO L225 Difference]: With dead ends: 864 [2023-11-19 04:10:19,532 INFO L226 Difference]: Without dead ends: 443 [2023-11-19 04:10:19,534 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 04:10:19,535 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 0 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:19,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 982 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:10:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-19 04:10:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-11-19 04:10:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 340 states have (on average 1.5441176470588236) internal successors, (525), 400 states have internal predecessors, (525), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 591 transitions. [2023-11-19 04:10:19,563 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 591 transitions. Word has length 16 [2023-11-19 04:10:19,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:19,564 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 591 transitions. [2023-11-19 04:10:19,564 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 04:10:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 591 transitions. [2023-11-19 04:10:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 04:10:19,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:19,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:19,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:19,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:19,779 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:19,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash -314005281, now seen corresponding path program 1 times [2023-11-19 04:10:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:19,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001430374] [2023-11-19 04:10:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:20,014 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 04:10:20,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:20,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001430374] [2023-11-19 04:10:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001430374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:20,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765753020] [2023-11-19 04:10:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:20,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:20,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:20,017 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:20,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:10:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:20,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:20,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:20,530 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 04:10:20,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:20,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765753020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:20,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:20,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:20,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29402427] [2023-11-19 04:10:20,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:20,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:20,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:20,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:20,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:20,534 INFO L87 Difference]: Start difference. First operand 443 states and 591 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:10:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:20,887 INFO L93 Difference]: Finished difference Result 443 states and 591 transitions. [2023-11-19 04:10:20,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:20,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-19 04:10:20,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:20,891 INFO L225 Difference]: With dead ends: 443 [2023-11-19 04:10:20,891 INFO L226 Difference]: Without dead ends: 442 [2023-11-19 04:10:20,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:20,893 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 12 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:20,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 965 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:10:20,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-19 04:10:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2023-11-19 04:10:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 340 states have (on average 1.5411764705882354) internal successors, (524), 399 states have internal predecessors, (524), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 590 transitions. [2023-11-19 04:10:20,923 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 590 transitions. Word has length 18 [2023-11-19 04:10:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:20,924 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 590 transitions. [2023-11-19 04:10:20,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:10:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 590 transitions. [2023-11-19 04:10:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:10:20,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:20,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:20,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:21,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:10:21,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:21,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:21,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1816247748, now seen corresponding path program 1 times [2023-11-19 04:10:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:21,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866425751] [2023-11-19 04:10:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:21,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:10:21,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:21,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866425751] [2023-11-19 04:10:21,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866425751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:21,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57448779] [2023-11-19 04:10:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:21,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:21,335 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:21,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:10:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:21,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:21,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:10:21,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:21,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57448779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:21,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:21,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:21,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210458644] [2023-11-19 04:10:21,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:21,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:21,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:21,806 INFO L87 Difference]: Start difference. First operand 442 states and 590 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:10:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:22,150 INFO L93 Difference]: Finished difference Result 442 states and 590 transitions. [2023-11-19 04:10:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-19 04:10:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:22,155 INFO L225 Difference]: With dead ends: 442 [2023-11-19 04:10:22,155 INFO L226 Difference]: Without dead ends: 441 [2023-11-19 04:10:22,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:22,156 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:22,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 979 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:10:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-19 04:10:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 437. [2023-11-19 04:10:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 336 states have (on average 1.5416666666666667) internal successors, (518), 394 states have internal predecessors, (518), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 584 transitions. [2023-11-19 04:10:22,185 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 584 transitions. Word has length 19 [2023-11-19 04:10:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:22,185 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 584 transitions. [2023-11-19 04:10:22,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:10:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 584 transitions. [2023-11-19 04:10:22,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:10:22,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:22,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:22,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:22,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 04:10:22,412 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:22,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1144228544, now seen corresponding path program 1 times [2023-11-19 04:10:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:22,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803772803] [2023-11-19 04:10:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:22,650 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 04:10:22,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803772803] [2023-11-19 04:10:22,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803772803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:22,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91465613] [2023-11-19 04:10:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:22,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:22,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:22,653 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:22,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:10:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:23,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:23,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:23,178 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 04:10:23,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:23,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91465613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:23,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:23,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232755534] [2023-11-19 04:10:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:23,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:23,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:23,182 INFO L87 Difference]: Start difference. First operand 437 states and 584 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:10:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:23,518 INFO L93 Difference]: Finished difference Result 450 states and 601 transitions. [2023-11-19 04:10:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:23,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-19 04:10:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:23,522 INFO L225 Difference]: With dead ends: 450 [2023-11-19 04:10:23,522 INFO L226 Difference]: Without dead ends: 449 [2023-11-19 04:10:23,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:23,523 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 10 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:23,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 975 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:10:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-19 04:10:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 448. [2023-11-19 04:10:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 347 states have (on average 1.5360230547550433) internal successors, (533), 405 states have internal predecessors, (533), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 599 transitions. [2023-11-19 04:10:23,548 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 599 transitions. Word has length 19 [2023-11-19 04:10:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:23,548 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 599 transitions. [2023-11-19 04:10:23,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:10:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 599 transitions. [2023-11-19 04:10:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 04:10:23,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:23,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:23,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:23,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:10:23,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:23,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash -64260443, now seen corresponding path program 1 times [2023-11-19 04:10:23,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373533964] [2023-11-19 04:10:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:23,974 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 04:10:23,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:23,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373533964] [2023-11-19 04:10:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373533964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218515596] [2023-11-19 04:10:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:23,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:23,977 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:24,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:10:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:24,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:24,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:24,479 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 04:10:24,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218515596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:24,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:24,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:24,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463235441] [2023-11-19 04:10:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:24,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:24,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:24,482 INFO L87 Difference]: Start difference. First operand 448 states and 599 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 04:10:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:24,771 INFO L93 Difference]: Finished difference Result 450 states and 601 transitions. [2023-11-19 04:10:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:24,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 22 [2023-11-19 04:10:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:24,775 INFO L225 Difference]: With dead ends: 450 [2023-11-19 04:10:24,775 INFO L226 Difference]: Without dead ends: 449 [2023-11-19 04:10:24,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 04:10:24,777 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 226 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:24,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 767 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:10:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-19 04:10:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2023-11-19 04:10:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 347 states have (on average 1.5331412103746398) internal successors, (532), 404 states have internal predecessors, (532), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 598 transitions. [2023-11-19 04:10:24,803 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 598 transitions. Word has length 22 [2023-11-19 04:10:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:24,804 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 598 transitions. [2023-11-19 04:10:24,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 04:10:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 598 transitions. [2023-11-19 04:10:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:10:24,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:24,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:24,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:25,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 04:10:25,029 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:25,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:25,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1992073131, now seen corresponding path program 1 times [2023-11-19 04:10:25,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:25,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698604946] [2023-11-19 04:10:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:25,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:25,305 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 04:10:25,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698604946] [2023-11-19 04:10:25,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698604946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383758094] [2023-11-19 04:10:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:25,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:25,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:25,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:25,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 04:10:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:25,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:10:25,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:25,848 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 04:10:25,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383758094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:25,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:10:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:10:25,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467925499] [2023-11-19 04:10:25,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:25,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:25,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:25,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:25,852 INFO L87 Difference]: Start difference. First operand 447 states and 598 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (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 04:10:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:26,290 INFO L93 Difference]: Finished difference Result 625 states and 846 transitions. [2023-11-19 04:10:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:26,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (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 23 [2023-11-19 04:10:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:26,295 INFO L225 Difference]: With dead ends: 625 [2023-11-19 04:10:26,296 INFO L226 Difference]: Without dead ends: 624 [2023-11-19 04:10:26,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 04:10:26,297 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 224 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:26,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 963 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:10:26,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-11-19 04:10:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 451. [2023-11-19 04:10:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 351 states have (on average 1.5299145299145298) internal successors, (537), 408 states have internal predecessors, (537), 36 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 04:10:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 603 transitions. [2023-11-19 04:10:26,335 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 603 transitions. Word has length 23 [2023-11-19 04:10:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:26,335 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 603 transitions. [2023-11-19 04:10:26,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (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 04:10:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 603 transitions. [2023-11-19 04:10:26,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 04:10:26,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:26,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:26,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:26,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 04:10:26,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-19 04:10:26,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:26,567 INFO L85 PathProgramCache]: Analyzing trace with hash -171272617, now seen corresponding path program 1 times [2023-11-19 04:10:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:26,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012131097] [2023-11-19 04:10:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:26,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:10:26,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012131097] [2023-11-19 04:10:26,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012131097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612636022] [2023-11-19 04:10:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:26,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:26,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:26,795 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:26,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91669455-4ae4-402d-bc5b-32be337bb29a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 04:10:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:27,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:10:27,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:10:27,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:10:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:10:27,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612636022] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:10:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [51632024] [2023-11-19 04:10:27,342 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-19 04:10:27,342 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:10:27,342 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:10:27,343 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:10:27,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs