./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/chgrp-incomplete-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/chgrp-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire --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 04b35c270e791b1253a35f6211b50b51a431caefa3940d30ef9cf9440452ea96 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:09,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:09,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:09:09,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:09,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:09,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:09,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:09,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:09,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:09,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:09,656 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:09,656 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:09,657 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:09,657 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:09:09,658 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:09,658 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:09,659 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:09:09,659 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:09:09,660 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:09,660 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:09:09,661 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:09:09,661 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:09:09,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:09,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:09,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:09:09,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:09,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:09,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:09,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:09,665 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:09:09,667 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:09:09,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:09,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:09,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:09,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:09,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:09,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:09,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:09,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:09,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:09,669 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:09:09,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:09:09,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:09,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:09,671 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:09,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:09,671 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_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04b35c270e791b1253a35f6211b50b51a431caefa3940d30ef9cf9440452ea96 [2023-11-23 21:09:09,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:09,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:09,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:09,985 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:09,985 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:09,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/chgrp-incomplete-2.i [2023-11-23 21:09:13,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:13,585 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:13,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/sv-benchmarks/c/busybox-1.22.0/chgrp-incomplete-2.i [2023-11-23 21:09:13,635 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/data/83fec75ea/15fc64cf89784a6ea9905b37ff687f81/FLAG8f5f68a2d [2023-11-23 21:09:13,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/data/83fec75ea/15fc64cf89784a6ea9905b37ff687f81 [2023-11-23 21:09:13,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:13,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:13,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:13,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:13,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:13,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:13" (1/1) ... [2023-11-23 21:09:13,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41bc40a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:13, skipping insertion in model container [2023-11-23 21:09:13,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:13" (1/1) ... [2023-11-23 21:09:13,775 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:15,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:15,288 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:15,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:15,642 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:15,680 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:15,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15 WrapperNode [2023-11-23 21:09:15,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:15,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:15,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:15,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:15,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,804 INFO L138 Inliner]: procedures = 597, calls = 171, calls flagged for inlining = 16, calls inlined = 14, statements flattened = 471 [2023-11-23 21:09:15,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:15,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:15,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:15,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:15,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,861 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:15,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:15,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:15,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:15,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (1/1) ... [2023-11-23 21:09:15,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:15,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:15,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-23 21:09:15,999 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-23 21:09:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:09:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:09:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:09:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:09:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:09:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:09:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:09:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:09:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:09:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:09:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:09:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:09:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:09:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:09:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:09:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:09:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:09:16,492 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:16,494 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:17,255 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:17,422 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:17,422 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-23 21:09:17,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:17 BoogieIcfgContainer [2023-11-23 21:09:17,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:17,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:17,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:17,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:17,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:13" (1/3) ... [2023-11-23 21:09:17,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e1cc66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:17, skipping insertion in model container [2023-11-23 21:09:17,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:15" (2/3) ... [2023-11-23 21:09:17,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e1cc66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:17, skipping insertion in model container [2023-11-23 21:09:17,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:17" (3/3) ... [2023-11-23 21:09:17,439 INFO L112 eAbstractionObserver]: Analyzing ICFG chgrp-incomplete-2.i [2023-11-23 21:09:17,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:17,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2023-11-23 21:09:17,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:17,525 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;@702a4cdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:17,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-23 21:09:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 92 states have (on average 1.75) internal successors, (161), 132 states have internal predecessors, (161), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:09:17,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:17,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:09:17,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:17,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash 447697, now seen corresponding path program 1 times [2023-11-23 21:09:17,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:17,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434039186] [2023-11-23 21:09:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:18,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434039186] [2023-11-23 21:09:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434039186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:09:18,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812233790] [2023-11-23 21:09:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:18,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:18,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:18,168 INFO L87 Difference]: Start difference. First operand has 145 states, 92 states have (on average 1.75) internal successors, (161), 132 states have internal predecessors, (161), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2023-11-23 21:09:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:18,345 INFO L93 Difference]: Finished difference Result 289 states and 363 transitions. [2023-11-23 21:09:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:18,348 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 [2023-11-23 21:09:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:18,362 INFO L225 Difference]: With dead ends: 289 [2023-11-23 21:09:18,362 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 21:09:18,368 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 [2023-11-23 21:09:18,373 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:18,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 296 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 21:09:18,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-11-23 21:09:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.641304347826087) internal successors, (151), 131 states have internal predecessors, (151), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2023-11-23 21:09:18,455 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 3 [2023-11-23 21:09:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:18,455 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2023-11-23 21:09:18,456 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) [2023-11-23 21:09:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2023-11-23 21:09:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:09:18,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:18,457 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:09:18,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:09:18,458 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:18,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash 452559435, now seen corresponding path program 1 times [2023-11-23 21:09:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:18,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420770904] [2023-11-23 21:09:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:18,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420770904] [2023-11-23 21:09:18,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420770904] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77721773] [2023-11-23 21:09:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:18,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:18,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:18,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:18,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:09:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:18,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:09:18,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:18,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:18,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77721773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:18,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:18,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-23 21:09:18,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110790830] [2023-11-23 21:09:18,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:18,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:09:18,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:18,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:09:18,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:18,994 INFO L87 Difference]: Start difference. First operand 144 states and 169 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) [2023-11-23 21:09:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:19,082 INFO L93 Difference]: Finished difference Result 144 states and 169 transitions. [2023-11-23 21:09:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:09:19,083 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 [2023-11-23 21:09:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:19,085 INFO L225 Difference]: With dead ends: 144 [2023-11-23 21:09:19,085 INFO L226 Difference]: Without dead ends: 143 [2023-11-23 21:09:19,085 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 [2023-11-23 21:09:19,087 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 3 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:19,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 286 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-23 21:09:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-23 21:09:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 92 states have (on average 1.6304347826086956) internal successors, (150), 130 states have internal predecessors, (150), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2023-11-23 21:09:19,112 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 6 [2023-11-23 21:09:19,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:19,113 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2023-11-23 21:09:19,113 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) [2023-11-23 21:09:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2023-11-23 21:09:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:09:19,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:19,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 21:09:19,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:19,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:19,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:19,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1144440718, now seen corresponding path program 1 times [2023-11-23 21:09:19,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:19,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929988125] [2023-11-23 21:09:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:09:19,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929988125] [2023-11-23 21:09:19,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929988125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:19,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:19,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:09:19,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535031280] [2023-11-23 21:09:19,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:19,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:19,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:19,458 INFO L87 Difference]: Start difference. First operand 143 states and 168 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) [2023-11-23 21:09:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:19,525 INFO L93 Difference]: Finished difference Result 143 states and 168 transitions. [2023-11-23 21:09:19,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:19,526 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 [2023-11-23 21:09:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:19,528 INFO L225 Difference]: With dead ends: 143 [2023-11-23 21:09:19,528 INFO L226 Difference]: Without dead ends: 142 [2023-11-23 21:09:19,529 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 [2023-11-23 21:09:19,531 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:19,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-23 21:09:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-11-23 21:09:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.6333333333333333) internal successors, (147), 127 states have internal predecessors, (147), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2023-11-23 21:09:19,545 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 7 [2023-11-23 21:09:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:19,546 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2023-11-23 21:09:19,546 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) [2023-11-23 21:09:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2023-11-23 21:09:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:09:19,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:19,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:19,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:09:19,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:19,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash 637341031, now seen corresponding path program 1 times [2023-11-23 21:09:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:19,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967976000] [2023-11-23 21:09:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:19,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:19,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967976000] [2023-11-23 21:09:19,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967976000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:19,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666467384] [2023-11-23 21:09:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:19,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:19,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:19,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:19,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:09:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:19,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:19,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:09:19,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:19,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666467384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:19,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:19,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:09:19,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077604930] [2023-11-23 21:09:19,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:19,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:19,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:19,922 INFO L87 Difference]: Start difference. First operand 140 states and 165 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) [2023-11-23 21:09:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:19,997 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2023-11-23 21:09:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:19,998 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 [2023-11-23 21:09:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:20,001 INFO L225 Difference]: With dead ends: 140 [2023-11-23 21:09:20,001 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 21:09:20,002 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 [2023-11-23 21:09:20,006 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 112 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:20,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 173 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 21:09:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-23 21:09:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 90 states have (on average 1.6111111111111112) internal successors, (145), 125 states have internal predecessors, (145), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2023-11-23 21:09:20,038 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 9 [2023-11-23 21:09:20,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:20,040 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2023-11-23 21:09:20,040 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) [2023-11-23 21:09:20,040 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2023-11-23 21:09:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:09:20,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:20,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:20,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:20,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:20,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:20,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1717264389, now seen corresponding path program 1 times [2023-11-23 21:09:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568715139] [2023-11-23 21:09:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:20,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:20,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:20,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568715139] [2023-11-23 21:09:20,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568715139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:20,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486290317] [2023-11-23 21:09:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:20,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:20,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:20,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:20,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:09:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:20,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:09:20,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:20,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:09:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486290317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:09:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [904111016] [2023-11-23 21:09:20,719 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 21:09:20,719 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:09:20,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:09:20,730 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:09:20,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:09:24,568 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-11-23 21:09:24,609 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:09:25,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [904111016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:25,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:09:25,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-23 21:09:25,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048764355] [2023-11-23 21:09:25,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:25,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:09:25,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:09:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:09:25,764 INFO L87 Difference]: Start difference. First operand 138 states and 163 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) [2023-11-23 21:09:26,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:26,650 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2023-11-23 21:09:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:09:26,651 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 [2023-11-23 21:09:26,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:26,652 INFO L225 Difference]: With dead ends: 140 [2023-11-23 21:09:26,653 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 21:09:26,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:09:26,654 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 4 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:26,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 576 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:09:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 21:09:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-23 21:09:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.5824175824175823) internal successors, (144), 124 states have internal predecessors, (144), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2023-11-23 21:09:26,674 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 10 [2023-11-23 21:09:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:26,674 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2023-11-23 21:09:26,674 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) [2023-11-23 21:09:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2023-11-23 21:09:26,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:09:26,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:26,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:26,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:26,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:26,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:26,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -751151884, now seen corresponding path program 1 times [2023-11-23 21:09:26,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:26,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990053914] [2023-11-23 21:09:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:26,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:27,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990053914] [2023-11-23 21:09:27,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990053914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616023618] [2023-11-23 21:09:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:27,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:27,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:27,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:09:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:27,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:27,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:09:27,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616023618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:27,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:27,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:09:27,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103819895] [2023-11-23 21:09:27,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:27,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:27,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:27,307 INFO L87 Difference]: Start difference. First operand 138 states and 162 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) [2023-11-23 21:09:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:27,370 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2023-11-23 21:09:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:27,371 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 [2023-11-23 21:09:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:27,372 INFO L225 Difference]: With dead ends: 138 [2023-11-23 21:09:27,372 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 21:09:27,373 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 [2023-11-23 21:09:27,374 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 2 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:27,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 273 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 21:09:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-23 21:09:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 91 states have (on average 1.5714285714285714) internal successors, (143), 123 states have internal predecessors, (143), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2023-11-23 21:09:27,394 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 15 [2023-11-23 21:09:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:27,395 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2023-11-23 21:09:27,395 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) [2023-11-23 21:09:27,395 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2023-11-23 21:09:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:09:27,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:27,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:27,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:27,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:27,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:27,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:27,612 INFO L85 PathProgramCache]: Analyzing trace with hash -751141862, now seen corresponding path program 1 times [2023-11-23 21:09:27,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:27,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155890038] [2023-11-23 21:09:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:27,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:27,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155890038] [2023-11-23 21:09:27,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155890038] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:27,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685068247] [2023-11-23 21:09:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:27,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:27,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:27,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:27,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:09:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:27,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:27,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:09:28,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685068247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:28,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:28,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:09:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142281692] [2023-11-23 21:09:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:28,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:28,010 INFO L87 Difference]: Start difference. First operand 137 states and 161 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) [2023-11-23 21:09:28,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:28,080 INFO L93 Difference]: Finished difference Result 137 states and 161 transitions. [2023-11-23 21:09:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:28,080 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 [2023-11-23 21:09:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:28,082 INFO L225 Difference]: With dead ends: 137 [2023-11-23 21:09:28,082 INFO L226 Difference]: Without dead ends: 136 [2023-11-23 21:09:28,082 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 [2023-11-23 21:09:28,083 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 6 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:28,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 266 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-23 21:09:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-23 21:09:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 91 states have (on average 1.5604395604395604) internal successors, (142), 122 states have internal predecessors, (142), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2023-11-23 21:09:28,094 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 15 [2023-11-23 21:09:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:28,094 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2023-11-23 21:09:28,094 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) [2023-11-23 21:09:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2023-11-23 21:09:28,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:09:28,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:28,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:28,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:28,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:28,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1810871769, now seen corresponding path program 1 times [2023-11-23 21:09:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139621267] [2023-11-23 21:09:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:28,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:28,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139621267] [2023-11-23 21:09:28,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139621267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:28,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500050789] [2023-11-23 21:09:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:28,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:28,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:28,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:28,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:09:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:28,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:28,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:09:28,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500050789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:28,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:28,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:09:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308531913] [2023-11-23 21:09:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:28,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:28,719 INFO L87 Difference]: Start difference. First operand 136 states and 160 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) [2023-11-23 21:09:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:28,786 INFO L93 Difference]: Finished difference Result 263 states and 312 transitions. [2023-11-23 21:09:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:28,787 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 [2023-11-23 21:09:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:28,789 INFO L225 Difference]: With dead ends: 263 [2023-11-23 21:09:28,789 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 21:09:28,792 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 [2023-11-23 21:09:28,793 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:28,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 21:09:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-23 21:09:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 125 states have internal predecessors, (145), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2023-11-23 21:09:28,804 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 16 [2023-11-23 21:09:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:28,805 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2023-11-23 21:09:28,805 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) [2023-11-23 21:09:28,805 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2023-11-23 21:09:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:09:28,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:28,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:28,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 21:09:29,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:29,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:29,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:29,027 INFO L85 PathProgramCache]: Analyzing trace with hash 236093418, now seen corresponding path program 1 times [2023-11-23 21:09:29,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:29,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242338751] [2023-11-23 21:09:29,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:29,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:29,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:29,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242338751] [2023-11-23 21:09:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242338751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852227482] [2023-11-23 21:09:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:29,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:29,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:29,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:29,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:09:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:29,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:29,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:09:29,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:29,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852227482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:29,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:29,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:09:29,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849553101] [2023-11-23 21:09:29,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:29,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:29,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:29,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:29,373 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:09:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:29,435 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2023-11-23 21:09:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-23 21:09:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:29,438 INFO L225 Difference]: With dead ends: 139 [2023-11-23 21:09:29,438 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 21:09:29,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:29,441 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 2 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:29,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 270 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:09:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 21:09:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-23 21:09:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 94 states have (on average 1.5319148936170213) internal successors, (144), 124 states have internal predecessors, (144), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2023-11-23 21:09:29,452 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 18 [2023-11-23 21:09:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:29,453 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2023-11-23 21:09:29,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:09:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2023-11-23 21:09:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:09:29,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:29,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:29,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:29,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:29,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:29,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1403483825, now seen corresponding path program 1 times [2023-11-23 21:09:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691945348] [2023-11-23 21:09:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:09:29,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:29,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691945348] [2023-11-23 21:09:29,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691945348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:29,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653030934] [2023-11-23 21:09:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:29,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:29,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:29,838 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:29,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:09:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:30,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:30,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:09:30,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:30,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653030934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:30,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:30,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:09:30,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022225914] [2023-11-23 21:09:30,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:30,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:30,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:30,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:30,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:30,132 INFO L87 Difference]: Start difference. First operand 138 states and 162 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) [2023-11-23 21:09:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:30,206 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2023-11-23 21:09:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:30,206 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 [2023-11-23 21:09:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:30,209 INFO L225 Difference]: With dead ends: 138 [2023-11-23 21:09:30,210 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 21:09:30,210 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 [2023-11-23 21:09:30,211 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:30,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 21:09:30,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2023-11-23 21:09:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 121 states have internal predecessors, (141), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2023-11-23 21:09:30,227 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 19 [2023-11-23 21:09:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:30,227 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2023-11-23 21:09:30,227 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) [2023-11-23 21:09:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2023-11-23 21:09:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:09:30,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:30,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:30,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:30,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:09:30,446 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:30,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:30,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1403794516, now seen corresponding path program 1 times [2023-11-23 21:09:30,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:30,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843353104] [2023-11-23 21:09:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:30,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:09:30,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843353104] [2023-11-23 21:09:30,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843353104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139749378] [2023-11-23 21:09:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:30,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:30,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:30,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:30,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:09:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:30,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:30,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:09:30,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:30,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139749378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:30,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:30,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:09:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582907857] [2023-11-23 21:09:30,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:30,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:30,875 INFO L87 Difference]: Start difference. First operand 135 states and 159 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) [2023-11-23 21:09:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:30,965 INFO L93 Difference]: Finished difference Result 143 states and 169 transitions. [2023-11-23 21:09:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:30,966 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 [2023-11-23 21:09:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:30,967 INFO L225 Difference]: With dead ends: 143 [2023-11-23 21:09:30,967 INFO L226 Difference]: Without dead ends: 142 [2023-11-23 21:09:30,968 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 [2023-11-23 21:09:30,969 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:30,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 266 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-23 21:09:30,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-23 21:09:30,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 99 states have (on average 1.5151515151515151) internal successors, (150), 128 states have internal predecessors, (150), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 168 transitions. [2023-11-23 21:09:30,982 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 168 transitions. Word has length 19 [2023-11-23 21:09:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:30,983 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 168 transitions. [2023-11-23 21:09:30,983 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) [2023-11-23 21:09:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 168 transitions. [2023-11-23 21:09:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:09:30,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:30,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:31,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-23 21:09:31,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:31,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:31,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1271038207, now seen corresponding path program 1 times [2023-11-23 21:09:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:31,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858495463] [2023-11-23 21:09:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:31,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858495463] [2023-11-23 21:09:31,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858495463] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414772139] [2023-11-23 21:09:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:31,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:31,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:31,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:31,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:09:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:31,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:31,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:09:31,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:31,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414772139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:31,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:31,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:09:31,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368331772] [2023-11-23 21:09:31,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:31,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:31,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:31,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:31,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:31,612 INFO L87 Difference]: Start difference. First operand 142 states and 168 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) [2023-11-23 21:09:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:31,677 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2023-11-23 21:09:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:31,677 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 [2023-11-23 21:09:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:31,679 INFO L225 Difference]: With dead ends: 146 [2023-11-23 21:09:31,679 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 21:09:31,680 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 [2023-11-23 21:09:31,680 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:31,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 21:09:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-23 21:09:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 102 states have (on average 1.5) internal successors, (153), 131 states have internal predecessors, (153), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2023-11-23 21:09:31,693 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 19 [2023-11-23 21:09:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:31,694 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2023-11-23 21:09:31,694 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) [2023-11-23 21:09:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2023-11-23 21:09:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:09:31,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:31,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:31,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:31,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:09:31,917 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:31,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:31,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1067124057, now seen corresponding path program 1 times [2023-11-23 21:09:31,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:31,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116938427] [2023-11-23 21:09:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:31,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:09:32,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:32,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116938427] [2023-11-23 21:09:32,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116938427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:32,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074073908] [2023-11-23 21:09:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:32,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:32,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:32,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:32,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:09:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:32,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:09:32,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:09:32,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:09:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:09:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074073908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:09:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [493525149] [2023-11-23 21:09:32,359 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-23 21:09:32,359 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:09:32,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:09:32,360 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:09:32,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:09:34,732 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-11-23 21:09:34,763 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:09:36,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [493525149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:36,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:09:36,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-11-23 21:09:36,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306792676] [2023-11-23 21:09:36,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:36,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:09:36,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:36,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:09:36,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-23 21:09:36,378 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-23 21:09:38,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:09:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:40,533 INFO L93 Difference]: Finished difference Result 263 states and 310 transitions. [2023-11-23 21:09:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:09:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-23 21:09:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:40,536 INFO L225 Difference]: With dead ends: 263 [2023-11-23 21:09:40,537 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 21:09:40,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-23 21:09:40,538 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 2 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:40,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 651 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2023-11-23 21:09:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 21:09:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-23 21:09:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 102 states have (on average 1.4901960784313726) internal successors, (152), 131 states have internal predecessors, (152), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2023-11-23 21:09:40,551 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 22 [2023-11-23 21:09:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:40,552 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2023-11-23 21:09:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-23 21:09:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2023-11-23 21:09:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:09:40,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:40,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:40,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:40,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:40,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:40,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1506191907, now seen corresponding path program 1 times [2023-11-23 21:09:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:40,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602908787] [2023-11-23 21:09:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:09:40,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:40,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602908787] [2023-11-23 21:09:40,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602908787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:40,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863383132] [2023-11-23 21:09:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:40,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:40,947 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:40,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:09:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:41,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:09:41,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:09:41,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:09:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:09:41,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863383132] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:09:41,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [127413236] [2023-11-23 21:09:41,309 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-23 21:09:41,309 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:09:41,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:09:41,310 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:09:41,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:09:49,230 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-11-23 21:09:49,260 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:09:54,719 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5756#(<= 2147483647 |ULTIMATE.start_main_~i~4#1|)' at error location [2023-11-23 21:09:54,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:09:54,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:09:54,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-23 21:09:54,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980711298] [2023-11-23 21:09:54,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:09:54,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:09:54,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:54,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:09:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=288, Unknown=1, NotChecked=0, Total=342 [2023-11-23 21:09:54,722 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:09:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:54,853 INFO L93 Difference]: Finished difference Result 294 states and 346 transitions. [2023-11-23 21:09:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:09:54,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-11-23 21:09:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:54,855 INFO L225 Difference]: With dead ends: 294 [2023-11-23 21:09:54,855 INFO L226 Difference]: Without dead ends: 154 [2023-11-23 21:09:54,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=53, Invalid=288, Unknown=1, NotChecked=0, Total=342 [2023-11-23 21:09:54,857 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 4 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:54,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 405 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:54,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-23 21:09:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-23 21:09:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 111 states have (on average 1.4504504504504505) internal successors, (161), 140 states have internal predecessors, (161), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:09:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 179 transitions. [2023-11-23 21:09:54,871 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 179 transitions. Word has length 26 [2023-11-23 21:09:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:54,871 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 179 transitions. [2023-11-23 21:09:54,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:09:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 179 transitions. [2023-11-23 21:09:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:09:54,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:54,873 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:54,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:55,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 21:09:55,095 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-23 21:09:55,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1867171043, now seen corresponding path program 2 times [2023-11-23 21:09:55,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:55,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586615383] [2023-11-23 21:09:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:55,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 21:09:55,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:55,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586615383] [2023-11-23 21:09:55,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586615383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:55,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869801222] [2023-11-23 21:09:55,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:09:55,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:55,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:55,273 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:55,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2bf734-0877-4eaf-87cc-00904cc5aa92/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:09:55,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 21:09:55,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:09:55,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:09:55,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 21:09:55,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:09:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 21:09:55,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869801222] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:09:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [935859849] [2023-11-23 21:09:55,689 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-23 21:09:55,690 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:09:55,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:09:55,690 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:09:55,690 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:10:02,768 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-11-23 21:10:02,787 INFO L180 IcfgInterpreter]: Interpretation finished