./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/rm-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/rm-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98b8c9945e108e03ae0147f47aa3594ac134e1706a3b8ed0d0bfef5164076027 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:48,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:48,589 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:14:48,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:48,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:48,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:48,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:48,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:48,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:48,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:48,646 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:48,647 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:48,647 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:48,648 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:14:48,648 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:48,649 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:48,650 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:14:48,650 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:14:48,651 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:48,651 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:14:48,652 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:14:48,652 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:14:48,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:48,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:48,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:48,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:48,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:48,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:48,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:48,656 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:14:48,656 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:14:48,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:48,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:48,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:48,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:48,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:48,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:48,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:48,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:48,668 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:14:48,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:14:48,669 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:48,669 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:48,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:48,670 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_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98b8c9945e108e03ae0147f47aa3594ac134e1706a3b8ed0d0bfef5164076027 [2023-11-19 04:14:48,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:48,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:48,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:48,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:48,999 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:49,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/rm-2.i [2023-11-19 04:14:52,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:53,016 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:53,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/sv-benchmarks/c/busybox-1.22.0/rm-2.i [2023-11-19 04:14:53,073 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/data/a6ed66f66/b3db02156d6c456196f07fd79a924c9d/FLAG99b2c0051 [2023-11-19 04:14:53,092 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/data/a6ed66f66/b3db02156d6c456196f07fd79a924c9d [2023-11-19 04:14:53,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:53,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:53,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:53,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:53,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:53,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:53" (1/1) ... [2023-11-19 04:14:53,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5336136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:53, skipping insertion in model container [2023-11-19 04:14:53,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:53" (1/1) ... [2023-11-19 04:14:53,245 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:55,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:55,682 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:55,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:56,294 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:56,294 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:56,294 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:56,295 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:56,295 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:56,304 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:56,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56 WrapperNode [2023-11-19 04:14:56,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:56,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:56,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:56,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:56,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,603 INFO L138 Inliner]: procedures = 665, calls = 522, calls flagged for inlining = 33, calls inlined = 32, statements flattened = 2258 [2023-11-19 04:14:56,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:56,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:56,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:56,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:56,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:56,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:56,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:56,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:56,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (1/1) ... [2023-11-19 04:14:56,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:56,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:56,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure last_char_is [2023-11-19 04:14:56,987 INFO L138 BoogieDeclarations]: Found implementation of procedure last_char_is [2023-11-19 04:14:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 04:14:56,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 04:14:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 04:14:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:14:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:14:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 04:14:56,988 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 04:14:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:14:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:14:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ask_confirmation [2023-11-19 04:14:56,989 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ask_confirmation [2023-11-19 04:14:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:14:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 04:14:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:14:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:14:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:14:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 04:14:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 04:14:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:14:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:14:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure remove_file [2023-11-19 04:14:56,992 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_file [2023-11-19 04:14:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure access [2023-11-19 04:14:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure access [2023-11-19 04:14:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:14:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:14:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-19 04:14:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:14:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:14:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:14:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-19 04:14:56,995 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-19 04:14:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:14:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-19 04:14:56,995 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-19 04:14:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 04:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-19 04:14:56,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-19 04:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 04:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 04:14:56,996 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 04:14:56,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:56,997 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-19 04:14:56,997 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-19 04:14:57,601 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:57,604 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:15:00,110 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:15:01,128 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:15:01,128 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-19 04:15:01,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:01 BoogieIcfgContainer [2023-11-19 04:15:01,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:15:01,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:15:01,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:15:01,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:15:01,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:53" (1/3) ... [2023-11-19 04:15:01,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c949a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:01, skipping insertion in model container [2023-11-19 04:15:01,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:56" (2/3) ... [2023-11-19 04:15:01,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c949a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:01, skipping insertion in model container [2023-11-19 04:15:01,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:01" (3/3) ... [2023-11-19 04:15:01,149 INFO L112 eAbstractionObserver]: Analyzing ICFG rm-2.i [2023-11-19 04:15:01,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:15:01,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-11-19 04:15:01,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:15:01,252 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;@5cd66785, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:15:01,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2023-11-19 04:15:01,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 527 states, 389 states have (on average 1.6401028277634961) internal successors, (638), 461 states have internal predecessors, (638), 52 states have call successors, (52), 15 states have call predecessors, (52), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 04:15:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:15:01,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:01,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:15:01,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:01,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:01,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2208226, now seen corresponding path program 1 times [2023-11-19 04:15:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330665768] [2023-11-19 04:15:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:01,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:01,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330665768] [2023-11-19 04:15:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330665768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:01,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:01,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:15:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156279324] [2023-11-19 04:15:01,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:01,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:01,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:02,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:02,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:02,033 INFO L87 Difference]: Start difference. First operand has 527 states, 389 states have (on average 1.6401028277634961) internal successors, (638), 461 states have internal predecessors, (638), 52 states have call successors, (52), 15 states have call predecessors, (52), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:02,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:02,649 INFO L93 Difference]: Finished difference Result 1047 states and 1499 transitions. [2023-11-19 04:15:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:02,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:15:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:02,665 INFO L225 Difference]: With dead ends: 1047 [2023-11-19 04:15:02,666 INFO L226 Difference]: Without dead ends: 522 [2023-11-19 04:15:02,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:02,677 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:02,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1228 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:15:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-11-19 04:15:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2023-11-19 04:15:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 386 states have (on average 1.5699481865284974) internal successors, (606), 462 states have internal predecessors, (606), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 704 transitions. [2023-11-19 04:15:02,763 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 704 transitions. Word has length 3 [2023-11-19 04:15:02,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:02,764 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 704 transitions. [2023-11-19 04:15:02,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 704 transitions. [2023-11-19 04:15:02,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:15:02,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:02,765 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:15:02,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:15:02,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:02,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1361556492, now seen corresponding path program 1 times [2023-11-19 04:15:02,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:02,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098945528] [2023-11-19 04:15:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:02,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:02,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098945528] [2023-11-19 04:15:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098945528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558743955] [2023-11-19 04:15:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:02,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:02,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:02,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:15:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:03,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:03,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:03,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558743955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:03,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:03,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 04:15:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620030241] [2023-11-19 04:15:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:15:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:15:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:03,400 INFO L87 Difference]: Start difference. First operand 522 states and 704 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:03,768 INFO L93 Difference]: Finished difference Result 522 states and 704 transitions. [2023-11-19 04:15:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:15:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:15:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:03,775 INFO L225 Difference]: With dead ends: 522 [2023-11-19 04:15:03,775 INFO L226 Difference]: Without dead ends: 521 [2023-11-19 04:15:03,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:03,778 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 3 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:03,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1224 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-11-19 04:15:03,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2023-11-19 04:15:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 386 states have (on average 1.567357512953368) internal successors, (605), 461 states have internal predecessors, (605), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 703 transitions. [2023-11-19 04:15:03,829 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 703 transitions. Word has length 6 [2023-11-19 04:15:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:03,829 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 703 transitions. [2023-11-19 04:15:03,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 703 transitions. [2023-11-19 04:15:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:15:03,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:03,830 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 04:15:03,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:04,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:04,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:04,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash -741420897, now seen corresponding path program 1 times [2023-11-19 04:15:04,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:04,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898247859] [2023-11-19 04:15:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:04,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898247859] [2023-11-19 04:15:04,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898247859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:04,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:04,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:04,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125756894] [2023-11-19 04:15:04,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:04,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:04,241 INFO L87 Difference]: Start difference. First operand 521 states and 703 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:04,594 INFO L93 Difference]: Finished difference Result 521 states and 703 transitions. [2023-11-19 04:15:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:04,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:15:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:04,599 INFO L225 Difference]: With dead ends: 521 [2023-11-19 04:15:04,599 INFO L226 Difference]: Without dead ends: 520 [2023-11-19 04:15:04,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:04,601 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 0 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:04,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1224 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-11-19 04:15:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2023-11-19 04:15:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 384 states have (on average 1.5677083333333333) internal successors, (602), 458 states have internal predecessors, (602), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 700 transitions. [2023-11-19 04:15:04,630 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 700 transitions. Word has length 7 [2023-11-19 04:15:04,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:04,631 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 700 transitions. [2023-11-19 04:15:04,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:04,632 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 700 transitions. [2023-11-19 04:15:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:15:04,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:04,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:04,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:15:04,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:04,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:04,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1893020109, now seen corresponding path program 1 times [2023-11-19 04:15:04,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:04,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100056583] [2023-11-19 04:15:04,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:04,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:04,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:04,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100056583] [2023-11-19 04:15:04,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100056583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:04,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889324718] [2023-11-19 04:15:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:04,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:04,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:04,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:04,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:15:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:05,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:05,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:05,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:05,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889324718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:05,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:05,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:15:05,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128632892] [2023-11-19 04:15:05,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:05,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:05,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:05,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:05,234 INFO L87 Difference]: Start difference. First operand 518 states and 700 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:05,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:05,612 INFO L93 Difference]: Finished difference Result 518 states and 700 transitions. [2023-11-19 04:15:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:05,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-19 04:15:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:05,618 INFO L225 Difference]: With dead ends: 518 [2023-11-19 04:15:05,618 INFO L226 Difference]: Without dead ends: 516 [2023-11-19 04:15:05,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:05,620 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 320 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:05,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 930 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-19 04:15:05,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2023-11-19 04:15:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 384 states have (on average 1.5625) internal successors, (600), 456 states have internal predecessors, (600), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 698 transitions. [2023-11-19 04:15:05,656 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 698 transitions. Word has length 9 [2023-11-19 04:15:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:05,658 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 698 transitions. [2023-11-19 04:15:05,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 698 transitions. [2023-11-19 04:15:05,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:15:05,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:05,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:05,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:05,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:05,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:05,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:05,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1445917945, now seen corresponding path program 1 times [2023-11-19 04:15:05,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:05,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973445168] [2023-11-19 04:15:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:06,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:06,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973445168] [2023-11-19 04:15:06,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973445168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:06,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779036750] [2023-11-19 04:15:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:06,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:06,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:06,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:06,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:15:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:06,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:06,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:06,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:06,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779036750] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [110693492] [2023-11-19 04:15:06,528 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:15:06,528 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:06,533 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:06,540 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:06,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:15,138 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 119 for LOIs [2023-11-19 04:15:15,204 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [110693492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:17,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:15:17,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-19 04:15:17,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048539312] [2023-11-19 04:15:17,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:17,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:15:17,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:17,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:15:17,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:15:17,243 INFO L87 Difference]: Start difference. First operand 516 states and 698 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:21,312 INFO L93 Difference]: Finished difference Result 518 states and 699 transitions. [2023-11-19 04:15:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:15:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-19 04:15:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:21,317 INFO L225 Difference]: With dead ends: 518 [2023-11-19 04:15:21,317 INFO L226 Difference]: Without dead ends: 516 [2023-11-19 04:15:21,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:15:21,319 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 6 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:21,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2081 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-19 04:15:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-19 04:15:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2023-11-19 04:15:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 385 states have (on average 1.5558441558441558) internal successors, (599), 455 states have internal predecessors, (599), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 697 transitions. [2023-11-19 04:15:21,352 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 697 transitions. Word has length 10 [2023-11-19 04:15:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:21,353 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 697 transitions. [2023-11-19 04:15:21,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:21,354 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 697 transitions. [2023-11-19 04:15:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:15:21,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:21,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:21,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:21,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:21,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:21,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -791469320, now seen corresponding path program 1 times [2023-11-19 04:15:21,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:21,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650954187] [2023-11-19 04:15:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:21,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:21,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:21,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650954187] [2023-11-19 04:15:21,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650954187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:21,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108645446] [2023-11-19 04:15:21,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:21,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:21,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:21,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:21,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:15:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:22,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:22,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:22,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:22,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108645446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:22,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:22,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:15:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452472724] [2023-11-19 04:15:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:22,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:22,232 INFO L87 Difference]: Start difference. First operand 516 states and 697 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:22,615 INFO L93 Difference]: Finished difference Result 516 states and 697 transitions. [2023-11-19 04:15:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:22,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-19 04:15:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:22,620 INFO L225 Difference]: With dead ends: 516 [2023-11-19 04:15:22,620 INFO L226 Difference]: Without dead ends: 515 [2023-11-19 04:15:22,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:22,622 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 7 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:22,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1205 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-11-19 04:15:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2023-11-19 04:15:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 385 states have (on average 1.5532467532467533) internal successors, (598), 454 states have internal predecessors, (598), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 696 transitions. [2023-11-19 04:15:22,692 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 696 transitions. Word has length 15 [2023-11-19 04:15:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:22,693 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 696 transitions. [2023-11-19 04:15:22,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:22,694 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 696 transitions. [2023-11-19 04:15:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:15:22,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:22,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:22,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:22,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 04:15:22,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:22,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:22,912 INFO L85 PathProgramCache]: Analyzing trace with hash -791517286, now seen corresponding path program 1 times [2023-11-19 04:15:22,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:22,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222045096] [2023-11-19 04:15:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:22,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:23,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222045096] [2023-11-19 04:15:23,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222045096] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465500754] [2023-11-19 04:15:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:23,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:23,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:23,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:23,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:15:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:23,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:23,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:23,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465500754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:23,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:15:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57570937] [2023-11-19 04:15:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:23,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:23,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:23,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:23,550 INFO L87 Difference]: Start difference. First operand 515 states and 696 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:23,927 INFO L93 Difference]: Finished difference Result 515 states and 696 transitions. [2023-11-19 04:15:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-19 04:15:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:23,933 INFO L225 Difference]: With dead ends: 515 [2023-11-19 04:15:23,933 INFO L226 Difference]: Without dead ends: 514 [2023-11-19 04:15:23,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:23,935 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 2 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:23,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1209 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-11-19 04:15:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2023-11-19 04:15:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 385 states have (on average 1.5506493506493506) internal successors, (597), 453 states have internal predecessors, (597), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 695 transitions. [2023-11-19 04:15:23,967 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 695 transitions. Word has length 15 [2023-11-19 04:15:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:23,968 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 695 transitions. [2023-11-19 04:15:23,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 695 transitions. [2023-11-19 04:15:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:15:23,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:23,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:23,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:24,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 04:15:24,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:24,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:24,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1234255710, now seen corresponding path program 1 times [2023-11-19 04:15:24,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:24,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858876666] [2023-11-19 04:15:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:24,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:24,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:24,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858876666] [2023-11-19 04:15:24,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858876666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753401870] [2023-11-19 04:15:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:24,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:24,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:24,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:24,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:15:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:24,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:24,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:24,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:24,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753401870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:24,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:24,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:15:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861208511] [2023-11-19 04:15:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:24,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:24,827 INFO L87 Difference]: Start difference. First operand 514 states and 695 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:25,215 INFO L93 Difference]: Finished difference Result 522 states and 705 transitions. [2023-11-19 04:15:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 04:15:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:25,221 INFO L225 Difference]: With dead ends: 522 [2023-11-19 04:15:25,221 INFO L226 Difference]: Without dead ends: 521 [2023-11-19 04:15:25,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:25,223 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 4 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:25,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1208 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-11-19 04:15:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 520. [2023-11-19 04:15:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 391 states have (on average 1.5498721227621484) internal successors, (606), 459 states have internal predecessors, (606), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 704 transitions. [2023-11-19 04:15:25,254 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 704 transitions. Word has length 16 [2023-11-19 04:15:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:25,255 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 704 transitions. [2023-11-19 04:15:25,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 704 transitions. [2023-11-19 04:15:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:15:25,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:25,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:25,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:25,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:25,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1232768755, now seen corresponding path program 1 times [2023-11-19 04:15:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733792631] [2023-11-19 04:15:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:25,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733792631] [2023-11-19 04:15:25,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733792631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832339855] [2023-11-19 04:15:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:25,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:25,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:25,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:15:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:25,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:25,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:25,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:25,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832339855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:25,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:25,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:15:25,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244483781] [2023-11-19 04:15:25,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:25,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:25,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:25,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:25,986 INFO L87 Difference]: Start difference. First operand 520 states and 704 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:26,310 INFO L93 Difference]: Finished difference Result 1030 states and 1398 transitions. [2023-11-19 04:15:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 04:15:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:26,315 INFO L225 Difference]: With dead ends: 1030 [2023-11-19 04:15:26,315 INFO L226 Difference]: Without dead ends: 526 [2023-11-19 04:15:26,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:26,317 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 0 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:26,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1210 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-19 04:15:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-11-19 04:15:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 397 states have (on average 1.5415617128463477) internal successors, (612), 465 states have internal predecessors, (612), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 710 transitions. [2023-11-19 04:15:26,344 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 710 transitions. Word has length 16 [2023-11-19 04:15:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:26,344 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 710 transitions. [2023-11-19 04:15:26,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 710 transitions. [2023-11-19 04:15:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:15:26,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:26,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:26,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:26,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:26,559 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:26,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:26,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1279294417, now seen corresponding path program 1 times [2023-11-19 04:15:26,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:26,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56949238] [2023-11-19 04:15:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:26,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:26,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56949238] [2023-11-19 04:15:26,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56949238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982392973] [2023-11-19 04:15:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:26,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:26,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:26,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:26,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:15:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:27,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:27,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:27,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982392973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:27,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:27,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:15:27,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435248559] [2023-11-19 04:15:27,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:27,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:27,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:27,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:27,144 INFO L87 Difference]: Start difference. First operand 526 states and 710 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:27,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:27,450 INFO L93 Difference]: Finished difference Result 530 states and 716 transitions. [2023-11-19 04:15:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:27,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 04:15:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:27,456 INFO L225 Difference]: With dead ends: 530 [2023-11-19 04:15:27,457 INFO L226 Difference]: Without dead ends: 529 [2023-11-19 04:15:27,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:27,458 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 260 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:27,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 973 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-11-19 04:15:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 525. [2023-11-19 04:15:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 397 states have (on average 1.5390428211586902) internal successors, (611), 464 states have internal predecessors, (611), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 709 transitions. [2023-11-19 04:15:27,486 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 709 transitions. Word has length 16 [2023-11-19 04:15:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:27,487 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 709 transitions. [2023-11-19 04:15:27,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:27,487 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 709 transitions. [2023-11-19 04:15:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:15:27,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:27,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:27,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:27,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:15:27,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:27,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1003422135, now seen corresponding path program 1 times [2023-11-19 04:15:27,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:27,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76015045] [2023-11-19 04:15:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:27,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:27,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:27,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76015045] [2023-11-19 04:15:27,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76015045] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:27,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830238502] [2023-11-19 04:15:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:27,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:27,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:27,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:15:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:28,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:28,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:28,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:28,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830238502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:28,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:28,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:15:28,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526360403] [2023-11-19 04:15:28,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:28,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:28,260 INFO L87 Difference]: Start difference. First operand 525 states and 709 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:28,663 INFO L93 Difference]: Finished difference Result 727 states and 993 transitions. [2023-11-19 04:15:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 17 [2023-11-19 04:15:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:28,669 INFO L225 Difference]: With dead ends: 727 [2023-11-19 04:15:28,670 INFO L226 Difference]: Without dead ends: 726 [2023-11-19 04:15:28,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:28,671 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 258 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:28,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1197 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:15:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-11-19 04:15:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 529. [2023-11-19 04:15:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 401 states have (on average 1.5361596009975063) internal successors, (616), 468 states have internal predecessors, (616), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 714 transitions. [2023-11-19 04:15:28,702 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 714 transitions. Word has length 17 [2023-11-19 04:15:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:28,705 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 714 transitions. [2023-11-19 04:15:28,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 714 transitions. [2023-11-19 04:15:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:15:28,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:28,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:28,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:28,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 04:15:28,932 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:28,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash -850533673, now seen corresponding path program 1 times [2023-11-19 04:15:28,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:28,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67565640] [2023-11-19 04:15:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:28,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:15:29,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67565640] [2023-11-19 04:15:29,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67565640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425725946] [2023-11-19 04:15:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:29,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:29,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:29,114 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:29,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:15:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:29,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:29,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:15:29,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425725946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:29,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:29,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:15:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866314455] [2023-11-19 04:15:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:29,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:29,511 INFO L87 Difference]: Start difference. First operand 529 states and 714 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:29,812 INFO L93 Difference]: Finished difference Result 529 states and 714 transitions. [2023-11-19 04:15:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:29,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-19 04:15:29,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:29,817 INFO L225 Difference]: With dead ends: 529 [2023-11-19 04:15:29,817 INFO L226 Difference]: Without dead ends: 528 [2023-11-19 04:15:29,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:29,819 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 0 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:29,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1207 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:15:29,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-11-19 04:15:29,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 524. [2023-11-19 04:15:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 397 states have (on average 1.5365239294710327) internal successors, (610), 463 states have internal predecessors, (610), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 04:15:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 708 transitions. [2023-11-19 04:15:29,855 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 708 transitions. Word has length 19 [2023-11-19 04:15:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:29,856 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 708 transitions. [2023-11-19 04:15:29,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:15:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 708 transitions. [2023-11-19 04:15:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:15:29,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:29,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:29,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:30,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:15:30,075 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-11-19 04:15:30,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash -703706754, now seen corresponding path program 1 times [2023-11-19 04:15:30,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:30,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469087652] [2023-11-19 04:15:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:30,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:15:30,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:30,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469087652] [2023-11-19 04:15:30,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469087652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:30,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716432179] [2023-11-19 04:15:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:30,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:30,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:30,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:30,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe0c130-e245-449c-88c9-2db4efbaff2d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:15:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:30,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:30,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:15:30,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:15:30,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716432179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:30,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1129764562] [2023-11-19 04:15:30,700 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-19 04:15:30,700 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:30,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:30,701 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:30,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:35,699 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 119 for LOIs [2023-11-19 04:15:35,729 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:38,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1129764562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:38,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:15:38,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-11-19 04:15:38,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540087859] [2023-11-19 04:15:38,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:38,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:15:38,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:38,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:15:38,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-19 04:15:38,197 INFO L87 Difference]: Start difference. First operand 524 states and 708 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 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)