./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/fold-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/fold-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 19b189a1ba3eb9343adde9da761600e9b854be7f2b58b0ffa70044b04c969116 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:25,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:25,428 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:16:25,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:25,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:25,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:25,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:25,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:25,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:25,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:25,498 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:25,499 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:25,500 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:25,502 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:25,502 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:25,502 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:25,503 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:25,503 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:25,504 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:25,504 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:25,505 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:25,505 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:25,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:25,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:25,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:25,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:25,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:25,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:25,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:25,510 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:16:25,511 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:16:25,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:25,512 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:25,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:25,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:25,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:25,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:25,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:25,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:25,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:25,514 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:25,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:25,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:25,515 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:25,516 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:25,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:25,516 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_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19b189a1ba3eb9343adde9da761600e9b854be7f2b58b0ffa70044b04c969116 [2023-11-24 23:16:25,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:25,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:25,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:25,889 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:25,891 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:25,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/fold-2.i [2023-11-24 23:16:28,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:29,426 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:29,427 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/sv-benchmarks/c/busybox-1.22.0/fold-2.i [2023-11-24 23:16:29,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/data/c83800141/bbafcd718e554de0b594cc34a99ee576/FLAGf25d77871 [2023-11-24 23:16:29,503 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/data/c83800141/bbafcd718e554de0b594cc34a99ee576 [2023-11-24 23:16:29,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:29,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:29,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:29,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:29,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:29,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:29" (1/1) ... [2023-11-24 23:16:29,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ee5de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:29, skipping insertion in model container [2023-11-24 23:16:29,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:29" (1/1) ... [2023-11-24 23:16:29,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:31,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:31,158 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:31,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:31,616 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,616 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,617 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,617 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,617 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,617 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,617 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,618 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,618 WARN L675 CHandler]: The function fwrite is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,618 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:31,626 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:31,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31 WrapperNode [2023-11-24 23:16:31,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:31,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:31,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:31,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:31,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,841 INFO L138 Inliner]: procedures = 581, calls = 481, calls flagged for inlining = 28, calls inlined = 26, statements flattened = 1835 [2023-11-24 23:16:31,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:31,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:31,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:31,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:31,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:31,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:31,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:31,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:31,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:31,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (1/1) ... [2023-11-24 23:16:32,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:32,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:32,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:32,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-24 23:16:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-24 23:16:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-24 23:16:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-24 23:16:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-24 23:16:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:16:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-24 23:16:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_column [2023-11-24 23:16:32,105 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_column [2023-11-24 23:16:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:16:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:16:32,107 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:16:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-24 23:16:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:16:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:16:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:16:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:16:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:16:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:32,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:16:32,112 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:16:32,113 INFO L130 BoogieDeclarations]: Found specification of procedure write2stdout [2023-11-24 23:16:32,113 INFO L138 BoogieDeclarations]: Found implementation of procedure write2stdout [2023-11-24 23:16:32,113 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-24 23:16:32,113 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-24 23:16:32,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:16:32,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:16:32,114 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-24 23:16:32,114 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-24 23:16:32,114 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-24 23:16:32,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:16:32,115 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:16:32,115 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:16:32,115 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:16:32,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:32,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:16:32,115 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-24 23:16:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:16:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-11-24 23:16:32,116 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-11-24 23:16:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-24 23:16:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure xatou_range [2023-11-24 23:16:32,116 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou_range [2023-11-24 23:16:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:16:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:16:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:16:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:16:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2023-11-24 23:16:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:32,688 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:32,691 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:34,847 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:35,722 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:35,722 INFO L309 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-24 23:16:35,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:35 BoogieIcfgContainer [2023-11-24 23:16:35,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:35,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:35,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:35,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:35,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:29" (1/3) ... [2023-11-24 23:16:35,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fee7daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:35, skipping insertion in model container [2023-11-24 23:16:35,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:31" (2/3) ... [2023-11-24 23:16:35,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fee7daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:35, skipping insertion in model container [2023-11-24 23:16:35,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:35" (3/3) ... [2023-11-24 23:16:35,735 INFO L112 eAbstractionObserver]: Analyzing ICFG fold-2.i [2023-11-24 23:16:35,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:35,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2023-11-24 23:16:35,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:35,828 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;@6787cfb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:35,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-11-24 23:16:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 468 states, 344 states have (on average 1.677325581395349) internal successors, (577), 418 states have internal predecessors, (577), 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) [2023-11-24 23:16:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:16:35,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:35,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:16:35,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:16:35,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:35,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1962191, now seen corresponding path program 1 times [2023-11-24 23:16:35,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800206817] [2023-11-24 23:16:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:35,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:36,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800206817] [2023-11-24 23:16:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800206817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:36,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:36,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:16:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977420089] [2023-11-24 23:16:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:36,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:36,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:36,564 INFO L87 Difference]: Start difference. First operand has 468 states, 344 states have (on average 1.677325581395349) internal successors, (577), 418 states have internal predecessors, (577), 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) [2023-11-24 23:16:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:37,128 INFO L93 Difference]: Finished difference Result 921 states and 1305 transitions. [2023-11-24 23:16:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:37,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:16:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:37,155 INFO L225 Difference]: With dead ends: 921 [2023-11-24 23:16:37,155 INFO L226 Difference]: Without dead ends: 455 [2023-11-24 23:16:37,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:37,170 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:37,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1032 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:16:37,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-11-24 23:16:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2023-11-24 23:16:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 337 states have (on average 1.5875370919881306) internal successors, (535), 413 states have internal predecessors, (535), 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) [2023-11-24 23:16:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 601 transitions. [2023-11-24 23:16:37,254 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 601 transitions. Word has length 3 [2023-11-24 23:16:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:37,254 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 601 transitions. [2023-11-24 23:16:37,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 601 transitions. [2023-11-24 23:16:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:16:37,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:37,256 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:16:37,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:16:37,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:16:37,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1673493160, now seen corresponding path program 1 times [2023-11-24 23:16:37,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:37,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621423473] [2023-11-24 23:16:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:37,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:37,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:37,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621423473] [2023-11-24 23:16:37,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621423473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:37,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140766543] [2023-11-24 23:16:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:37,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:37,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:37,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:37,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:16:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:37,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:37,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:37,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:37,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140766543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:37,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:37,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:16:37,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424703701] [2023-11-24 23:16:37,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:37,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:37,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:37,908 INFO L87 Difference]: Start difference. First operand 455 states and 601 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:38,413 INFO L93 Difference]: Finished difference Result 455 states and 601 transitions. [2023-11-24 23:16:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:38,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:16:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:38,419 INFO L225 Difference]: With dead ends: 455 [2023-11-24 23:16:38,419 INFO L226 Difference]: Without dead ends: 454 [2023-11-24 23:16:38,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:38,421 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 2 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:38,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1542 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:16:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-24 23:16:38,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2023-11-24 23:16:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 337 states have (on average 1.5845697329376855) internal successors, (534), 412 states have internal predecessors, (534), 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) [2023-11-24 23:16:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 600 transitions. [2023-11-24 23:16:38,467 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 600 transitions. Word has length 6 [2023-11-24 23:16:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:38,468 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 600 transitions. [2023-11-24 23:16:38,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 600 transitions. [2023-11-24 23:16:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:16:38,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:38,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:16:38,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:16:38,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:38,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:16:38,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:38,678 INFO L85 PathProgramCache]: Analyzing trace with hash -338679988, now seen corresponding path program 1 times [2023-11-24 23:16:38,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:38,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150951574] [2023-11-24 23:16:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:38,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:38,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150951574] [2023-11-24 23:16:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150951574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:38,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:38,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039581687] [2023-11-24 23:16:38,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:38,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:38,820 INFO L87 Difference]: Start difference. First operand 454 states and 600 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:39,148 INFO L93 Difference]: Finished difference Result 454 states and 600 transitions. [2023-11-24 23:16:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:16:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:39,152 INFO L225 Difference]: With dead ends: 454 [2023-11-24 23:16:39,153 INFO L226 Difference]: Without dead ends: 453 [2023-11-24 23:16:39,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:39,154 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 0 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1028 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 [2023-11-24 23:16:39,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1028 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:16:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-11-24 23:16:39,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 451. [2023-11-24 23:16:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 335 states have (on average 1.5850746268656717) internal successors, (531), 409 states have internal predecessors, (531), 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) [2023-11-24 23:16:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 597 transitions. [2023-11-24 23:16:39,174 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 597 transitions. Word has length 7 [2023-11-24 23:16:39,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:39,174 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 597 transitions. [2023-11-24 23:16:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 597 transitions. [2023-11-24 23:16:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:16:39,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:39,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:39,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:16:39,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:16:39,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1603070219, now seen corresponding path program 1 times [2023-11-24 23:16:39,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798605313] [2023-11-24 23:16:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:39,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:39,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798605313] [2023-11-24 23:16:39,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798605313] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:39,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198931779] [2023-11-24 23:16:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:39,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:39,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:39,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:39,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:16:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:39,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:16:39,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:39,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:39,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198931779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:39,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:39,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:16:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612598288] [2023-11-24 23:16:39,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:39,701 INFO L87 Difference]: Start difference. First operand 451 states and 597 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:39,983 INFO L93 Difference]: Finished difference Result 451 states and 597 transitions. [2023-11-24 23:16:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-24 23:16:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:39,987 INFO L225 Difference]: With dead ends: 451 [2023-11-24 23:16:39,987 INFO L226 Difference]: Without dead ends: 449 [2023-11-24 23:16:39,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:39,989 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 342 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 711 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 [2023-11-24 23:16:39,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 711 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:16:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-24 23:16:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2023-11-24 23:16:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 335 states have (on average 1.5791044776119403) internal successors, (529), 407 states have internal predecessors, (529), 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) [2023-11-24 23:16:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 595 transitions. [2023-11-24 23:16:40,012 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 595 transitions. Word has length 9 [2023-11-24 23:16:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:40,014 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 595 transitions. [2023-11-24 23:16:40,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 595 transitions. [2023-11-24 23:16:40,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:16:40,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:40,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:40,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:40,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:40,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:16:40,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:40,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1844431192, now seen corresponding path program 1 times [2023-11-24 23:16:40,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:40,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831746285] [2023-11-24 23:16:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:40,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:40,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831746285] [2023-11-24 23:16:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831746285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243676478] [2023-11-24 23:16:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:40,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:40,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:40,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:16:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:40,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:40,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:40,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:40,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243676478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1737353821] [2023-11-24 23:16:40,812 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:16:40,812 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:40,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:40,821 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:40,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:16:51,991 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-11-24 23:16:52,050 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:16:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1737353821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:53,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:16:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-24 23:16:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765001076] [2023-11-24 23:16:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:53,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:16:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:16:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:16:53,933 INFO L87 Difference]: Start difference. First operand 449 states and 595 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) [2023-11-24 23:16:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:57,003 INFO L93 Difference]: Finished difference Result 451 states and 596 transitions. [2023-11-24 23:16:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:16:57,004 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 [2023-11-24 23:16:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:57,007 INFO L225 Difference]: With dead ends: 451 [2023-11-24 23:16:57,008 INFO L226 Difference]: Without dead ends: 449 [2023-11-24 23:16:57,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:16:57,009 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 6 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:57,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2214 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-24 23:16:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-24 23:16:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2023-11-24 23:16:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 336 states have (on average 1.5714285714285714) internal successors, (528), 406 states have internal predecessors, (528), 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) [2023-11-24 23:16:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 594 transitions. [2023-11-24 23:16:57,035 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 594 transitions. Word has length 10 [2023-11-24 23:16:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:57,035 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 594 transitions. [2023-11-24 23:16:57,035 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) [2023-11-24 23:16:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 594 transitions. [2023-11-24 23:16:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:16:57,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:57,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:57,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:57,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:57,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:16:57,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1674171988, now seen corresponding path program 1 times [2023-11-24 23:16:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:57,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980178281] [2023-11-24 23:16:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:57,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:57,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980178281] [2023-11-24 23:16:57,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980178281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:57,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940666388] [2023-11-24 23:16:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:57,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:57,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:57,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:57,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:16:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:57,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:16:57,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:57,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:57,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940666388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:57,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:57,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:16:57,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577476128] [2023-11-24 23:16:57,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:57,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:57,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:57,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:57,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:57,870 INFO L87 Difference]: Start difference. First operand 449 states and 594 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) [2023-11-24 23:16:58,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:58,218 INFO L93 Difference]: Finished difference Result 449 states and 594 transitions. [2023-11-24 23:16:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:58,219 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 [2023-11-24 23:16:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:58,223 INFO L225 Difference]: With dead ends: 449 [2023-11-24 23:16:58,223 INFO L226 Difference]: Without dead ends: 448 [2023-11-24 23:16:58,223 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 [2023-11-24 23:16:58,224 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 7 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1009 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 [2023-11-24 23:16:58,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1009 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:16:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-24 23:16:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2023-11-24 23:16:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 336 states have (on average 1.568452380952381) internal successors, (527), 405 states have internal predecessors, (527), 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) [2023-11-24 23:16:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 593 transitions. [2023-11-24 23:16:58,249 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 593 transitions. Word has length 15 [2023-11-24 23:16:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:58,249 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 593 transitions. [2023-11-24 23:16:58,249 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) [2023-11-24 23:16:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 593 transitions. [2023-11-24 23:16:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:16:58,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:58,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:58,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:16:58,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:58,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:16:58,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1674222558, now seen corresponding path program 1 times [2023-11-24 23:16:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:58,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257746406] [2023-11-24 23:16:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:58,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:58,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257746406] [2023-11-24 23:16:58,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257746406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:58,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820972546] [2023-11-24 23:16:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:58,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:58,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:58,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:58,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:16:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:59,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:16:59,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:59,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:59,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820972546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:59,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:59,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:16:59,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675979155] [2023-11-24 23:16:59,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:59,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:59,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:59,054 INFO L87 Difference]: Start difference. First operand 448 states and 593 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) [2023-11-24 23:16:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:59,439 INFO L93 Difference]: Finished difference Result 448 states and 593 transitions. [2023-11-24 23:16:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:59,440 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 [2023-11-24 23:16:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:59,443 INFO L225 Difference]: With dead ends: 448 [2023-11-24 23:16:59,443 INFO L226 Difference]: Without dead ends: 447 [2023-11-24 23:16:59,444 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 [2023-11-24 23:16:59,444 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 2 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1013 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 [2023-11-24 23:16:59,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1013 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:16:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-24 23:16:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2023-11-24 23:16:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 336 states have (on average 1.5654761904761905) internal successors, (526), 404 states have internal predecessors, (526), 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) [2023-11-24 23:16:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 592 transitions. [2023-11-24 23:16:59,469 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 592 transitions. Word has length 15 [2023-11-24 23:16:59,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:59,469 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 592 transitions. [2023-11-24 23:16:59,469 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) [2023-11-24 23:16:59,470 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 592 transitions. [2023-11-24 23:16:59,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:16:59,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:59,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:59,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:59,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:59,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:16:59,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:59,678 INFO L85 PathProgramCache]: Analyzing trace with hash -359723613, now seen corresponding path program 1 times [2023-11-24 23:16:59,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:59,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075380948] [2023-11-24 23:16:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:59,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:59,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:59,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075380948] [2023-11-24 23:16:59,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075380948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:59,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209725251] [2023-11-24 23:16:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:59,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:59,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:59,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:59,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:17:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:00,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:00,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:00,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:00,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209725251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:00,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:00,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:00,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979381481] [2023-11-24 23:17:00,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:00,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:00,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:00,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:00,238 INFO L87 Difference]: Start difference. First operand 447 states and 592 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) [2023-11-24 23:17:00,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:00,573 INFO L93 Difference]: Finished difference Result 455 states and 602 transitions. [2023-11-24 23:17:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:00,574 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 [2023-11-24 23:17:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:00,577 INFO L225 Difference]: With dead ends: 455 [2023-11-24 23:17:00,577 INFO L226 Difference]: Without dead ends: 454 [2023-11-24 23:17:00,578 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 [2023-11-24 23:17:00,578 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 4 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1012 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 [2023-11-24 23:17:00,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1012 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:00,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-24 23:17:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 453. [2023-11-24 23:17:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 342 states have (on average 1.564327485380117) internal successors, (535), 410 states have internal predecessors, (535), 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) [2023-11-24 23:17:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 601 transitions. [2023-11-24 23:17:00,609 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 601 transitions. Word has length 16 [2023-11-24 23:17:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:00,609 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 601 transitions. [2023-11-24 23:17:00,609 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) [2023-11-24 23:17:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 601 transitions. [2023-11-24 23:17:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:17:00,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:00,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:00,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:00,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:00,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:17:00,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:00,818 INFO L85 PathProgramCache]: Analyzing trace with hash -361291292, now seen corresponding path program 1 times [2023-11-24 23:17:00,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:00,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028809011] [2023-11-24 23:17:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:00,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:01,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:01,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028809011] [2023-11-24 23:17:01,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028809011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:01,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863246198] [2023-11-24 23:17:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:01,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:01,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:01,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:01,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:17:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:01,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:01,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:01,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:01,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863246198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:01,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:01,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655198639] [2023-11-24 23:17:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:01,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:01,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:01,425 INFO L87 Difference]: Start difference. First operand 453 states and 601 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) [2023-11-24 23:17:01,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:01,784 INFO L93 Difference]: Finished difference Result 896 states and 1192 transitions. [2023-11-24 23:17:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:01,784 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 [2023-11-24 23:17:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:01,787 INFO L225 Difference]: With dead ends: 896 [2023-11-24 23:17:01,788 INFO L226 Difference]: Without dead ends: 459 [2023-11-24 23:17:01,789 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 [2023-11-24 23:17:01,790 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 0 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1014 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 [2023-11-24 23:17:01,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1014 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-24 23:17:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2023-11-24 23:17:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 348 states have (on average 1.5545977011494252) internal successors, (541), 416 states have internal predecessors, (541), 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) [2023-11-24 23:17:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 607 transitions. [2023-11-24 23:17:01,818 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 607 transitions. Word has length 16 [2023-11-24 23:17:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:01,819 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 607 transitions. [2023-11-24 23:17:01,819 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) [2023-11-24 23:17:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 607 transitions. [2023-11-24 23:17:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 23:17:01,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:01,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:01,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:02,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:02,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:17:02,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:02,028 INFO L85 PathProgramCache]: Analyzing trace with hash -810908884, now seen corresponding path program 1 times [2023-11-24 23:17:02,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:02,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594517053] [2023-11-24 23:17:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:02,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:02,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:02,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594517053] [2023-11-24 23:17:02,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594517053] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:02,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209038249] [2023-11-24 23:17:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:02,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:02,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:02,256 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:02,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:17:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:02,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:02,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:02,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209038249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:02,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:02,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292074045] [2023-11-24 23:17:02,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:02,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:02,710 INFO L87 Difference]: Start difference. First operand 459 states and 607 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) [2023-11-24 23:17:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:03,047 INFO L93 Difference]: Finished difference Result 459 states and 607 transitions. [2023-11-24 23:17:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:03,048 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 [2023-11-24 23:17:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:03,051 INFO L225 Difference]: With dead ends: 459 [2023-11-24 23:17:03,051 INFO L226 Difference]: Without dead ends: 458 [2023-11-24 23:17:03,052 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 [2023-11-24 23:17:03,053 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 12 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 997 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 [2023-11-24 23:17:03,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 997 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:03,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-11-24 23:17:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2023-11-24 23:17:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 348 states have (on average 1.5517241379310345) internal successors, (540), 415 states have internal predecessors, (540), 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) [2023-11-24 23:17:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 606 transitions. [2023-11-24 23:17:03,089 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 606 transitions. Word has length 18 [2023-11-24 23:17:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:03,090 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 606 transitions. [2023-11-24 23:17:03,090 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) [2023-11-24 23:17:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 606 transitions. [2023-11-24 23:17:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:17:03,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:03,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:03,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:03,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:17:03,300 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:17:03,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash -40390241, now seen corresponding path program 1 times [2023-11-24 23:17:03,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:03,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808541189] [2023-11-24 23:17:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:03,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:17:03,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808541189] [2023-11-24 23:17:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808541189] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324333802] [2023-11-24 23:17:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:03,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:03,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:03,469 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:03,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:17:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:03,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:03,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:17:03,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:03,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324333802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:03,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698487873] [2023-11-24 23:17:03,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:03,905 INFO L87 Difference]: Start difference. First operand 458 states and 606 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) [2023-11-24 23:17:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:04,226 INFO L93 Difference]: Finished difference Result 458 states and 606 transitions. [2023-11-24 23:17:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:04,227 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 [2023-11-24 23:17:04,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:04,230 INFO L225 Difference]: With dead ends: 458 [2023-11-24 23:17:04,230 INFO L226 Difference]: Without dead ends: 457 [2023-11-24 23:17:04,231 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 [2023-11-24 23:17:04,231 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1011 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 [2023-11-24 23:17:04,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1011 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-24 23:17:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 453. [2023-11-24 23:17:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 344 states have (on average 1.552325581395349) internal successors, (534), 410 states have internal predecessors, (534), 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) [2023-11-24 23:17:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 600 transitions. [2023-11-24 23:17:04,258 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 600 transitions. Word has length 19 [2023-11-24 23:17:04,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:04,262 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 600 transitions. [2023-11-24 23:17:04,262 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) [2023-11-24 23:17:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 600 transitions. [2023-11-24 23:17:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:17:04,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:04,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:04,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:04,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:04,480 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:17:04,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:04,480 INFO L85 PathProgramCache]: Analyzing trace with hash 631628963, now seen corresponding path program 1 times [2023-11-24 23:17:04,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:04,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502461521] [2023-11-24 23:17:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:04,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:04,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502461521] [2023-11-24 23:17:04,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502461521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111284909] [2023-11-24 23:17:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:04,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:04,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:04,653 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:04,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:17:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:05,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:05,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:05,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:05,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111284909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:05,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:05,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:05,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930459228] [2023-11-24 23:17:05,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:05,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:05,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:05,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:05,113 INFO L87 Difference]: Start difference. First operand 453 states and 600 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) [2023-11-24 23:17:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:05,417 INFO L93 Difference]: Finished difference Result 466 states and 617 transitions. [2023-11-24 23:17:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:05,417 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 [2023-11-24 23:17:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:05,421 INFO L225 Difference]: With dead ends: 466 [2023-11-24 23:17:05,422 INFO L226 Difference]: Without dead ends: 465 [2023-11-24 23:17:05,422 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 [2023-11-24 23:17:05,423 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 10 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1007 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 [2023-11-24 23:17:05,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1007 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-11-24 23:17:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 464. [2023-11-24 23:17:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 355 states have (on average 1.5464788732394366) internal successors, (549), 421 states have internal predecessors, (549), 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) [2023-11-24 23:17:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 615 transitions. [2023-11-24 23:17:05,450 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 615 transitions. Word has length 19 [2023-11-24 23:17:05,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:05,451 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 615 transitions. [2023-11-24 23:17:05,451 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) [2023-11-24 23:17:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 615 transitions. [2023-11-24 23:17:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 23:17:05,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:05,457 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] [2023-11-24 23:17:05,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:05,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:17:05,665 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:17:05,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash -900405646, now seen corresponding path program 1 times [2023-11-24 23:17:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109996107] [2023-11-24 23:17:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:05,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:05,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109996107] [2023-11-24 23:17:05,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109996107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:05,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66374083] [2023-11-24 23:17:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:05,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:05,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:05,844 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:05,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:17:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:06,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:06,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:06,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:06,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66374083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:06,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:06,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249162938] [2023-11-24 23:17:06,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:06,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:06,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:06,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:06,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:06,335 INFO L87 Difference]: Start difference. First operand 464 states and 615 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) [2023-11-24 23:17:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:06,613 INFO L93 Difference]: Finished difference Result 466 states and 617 transitions. [2023-11-24 23:17:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:06,614 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 [2023-11-24 23:17:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:06,617 INFO L225 Difference]: With dead ends: 466 [2023-11-24 23:17:06,617 INFO L226 Difference]: Without dead ends: 465 [2023-11-24 23:17:06,617 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 [2023-11-24 23:17:06,618 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 226 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 799 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 [2023-11-24 23:17:06,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 799 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-11-24 23:17:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 463. [2023-11-24 23:17:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 355 states have (on average 1.5436619718309859) internal successors, (548), 420 states have internal predecessors, (548), 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) [2023-11-24 23:17:06,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 614 transitions. [2023-11-24 23:17:06,640 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 614 transitions. Word has length 22 [2023-11-24 23:17:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:06,640 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 614 transitions. [2023-11-24 23:17:06,640 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) [2023-11-24 23:17:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 614 transitions. [2023-11-24 23:17:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:17:06,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:06,642 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] [2023-11-24 23:17:06,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:06,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:17:06,849 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:17:06,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:06,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2142770632, now seen corresponding path program 1 times [2023-11-24 23:17:06,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:06,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113028952] [2023-11-24 23:17:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:06,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:07,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:07,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113028952] [2023-11-24 23:17:07,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113028952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550848726] [2023-11-24 23:17:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:07,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:07,020 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:07,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:17:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:07,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:07,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:07,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:07,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550848726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:07,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:07,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316865851] [2023-11-24 23:17:07,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:07,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:07,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:07,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:07,531 INFO L87 Difference]: Start difference. First operand 463 states and 614 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) [2023-11-24 23:17:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:07,952 INFO L93 Difference]: Finished difference Result 641 states and 862 transitions. [2023-11-24 23:17:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:07,952 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 [2023-11-24 23:17:07,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:07,956 INFO L225 Difference]: With dead ends: 641 [2023-11-24 23:17:07,957 INFO L226 Difference]: Without dead ends: 640 [2023-11-24 23:17:07,957 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 [2023-11-24 23:17:07,958 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 224 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 995 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 [2023-11-24 23:17:07,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 995 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:17:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-11-24 23:17:07,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 467. [2023-11-24 23:17:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 359 states have (on average 1.5403899721448469) internal successors, (553), 424 states have internal predecessors, (553), 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) [2023-11-24 23:17:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 619 transitions. [2023-11-24 23:17:07,982 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 619 transitions. Word has length 23 [2023-11-24 23:17:07,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:07,983 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 619 transitions. [2023-11-24 23:17:07,983 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) [2023-11-24 23:17:07,983 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 619 transitions. [2023-11-24 23:17:07,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:17:07,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:07,984 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] [2023-11-24 23:17:07,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:08,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 23:17:08,197 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-24 23:17:08,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:08,198 INFO L85 PathProgramCache]: Analyzing trace with hash -547927836, now seen corresponding path program 1 times [2023-11-24 23:17:08,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:08,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807986232] [2023-11-24 23:17:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 23:17:08,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807986232] [2023-11-24 23:17:08,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807986232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439841441] [2023-11-24 23:17:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:08,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:08,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:08,388 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:08,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62d06d3f-9f17-46f2-b4b7-2f81bb7fe1a7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:17:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:08,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:17:08,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 23:17:08,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:17:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 23:17:08,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439841441] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:17:08,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [517522427] [2023-11-24 23:17:08,902 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-24 23:17:08,902 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:17:08,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:17:08,903 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:17:08,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs