./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/rm-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/rm-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dbde1465e4a8a8be87bf489cace5bdf23c2ed0aa6acb10b5f1f6c91d8d840161 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:38,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:38,452 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:16:38,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:38,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:38,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:38,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:38,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:38,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:38,517 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:38,518 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:38,519 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:38,520 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:38,521 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:38,522 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:38,522 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:38,523 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:38,523 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:38,523 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:38,524 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:38,524 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:38,525 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:38,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:38,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:38,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:38,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:38,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:38,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:38,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:38,529 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:16:38,531 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:16:38,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:38,531 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:38,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:38,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:38,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:38,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:38,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:38,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:38,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:38,535 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:38,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:38,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:38,536 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:38,537 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:38,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:38,537 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_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbde1465e4a8a8be87bf489cace5bdf23c2ed0aa6acb10b5f1f6c91d8d840161 [2023-11-24 23:16:38,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:38,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:38,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:38,835 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:38,836 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:38,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/rm-1.i [2023-11-24 23:16:41,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:42,456 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:42,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/sv-benchmarks/c/busybox-1.22.0/rm-1.i [2023-11-24 23:16:42,507 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/data/ca7bfb887/31a80f20c218488da357ab510ae07f7b/FLAG1ba4c225f [2023-11-24 23:16:42,528 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/data/ca7bfb887/31a80f20c218488da357ab510ae07f7b [2023-11-24 23:16:42,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:42,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:42,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:42,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:42,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:42,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:42" (1/1) ... [2023-11-24 23:16:42,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b119d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:42, skipping insertion in model container [2023-11-24 23:16:42,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:42" (1/1) ... [2023-11-24 23:16:42,654 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:44,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:44,411 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:44,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:45,092 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:45,093 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:45,094 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:45,095 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:45,095 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:45,103 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:45,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45 WrapperNode [2023-11-24 23:16:45,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:45,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:45,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:45,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:45,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,383 INFO L138 Inliner]: procedures = 665, calls = 522, calls flagged for inlining = 33, calls inlined = 32, statements flattened = 2276 [2023-11-24 23:16:45,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:45,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:45,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:45,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:45,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:45,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:45,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:45,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:45,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (1/1) ... [2023-11-24 23:16:45,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:45,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:45,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:45,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure last_char_is [2023-11-24 23:16:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure last_char_is [2023-11-24 23:16:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-24 23:16:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-24 23:16:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:16:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:16:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:16:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:16:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:16:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:16:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ask_confirmation [2023-11-24 23:16:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ask_confirmation [2023-11-24 23:16:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:16:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:16:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:16:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:45,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:16:45,755 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:16:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-24 23:16:45,755 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-24 23:16:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:16:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:16:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure remove_file [2023-11-24 23:16:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_file [2023-11-24 23:16:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure access [2023-11-24 23:16:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure access [2023-11-24 23:16:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:16:45,758 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:16:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:16:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:16:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-24 23:16:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:16:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:16:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-24 23:16:45,760 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-24 23:16:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:16:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-24 23:16:45,761 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-24 23:16:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-24 23:16:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-24 23:16:45,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-24 23:16:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:16:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:16:45,762 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:16:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-24 23:16:45,763 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-24 23:16:46,365 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:46,368 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:49,270 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:50,327 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:50,328 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-24 23:16:50,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:50 BoogieIcfgContainer [2023-11-24 23:16:50,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:50,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:50,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:50,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:50,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:42" (1/3) ... [2023-11-24 23:16:50,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f72305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:50, skipping insertion in model container [2023-11-24 23:16:50,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:45" (2/3) ... [2023-11-24 23:16:50,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f72305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:50, skipping insertion in model container [2023-11-24 23:16:50,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:50" (3/3) ... [2023-11-24 23:16:50,347 INFO L112 eAbstractionObserver]: Analyzing ICFG rm-1.i [2023-11-24 23:16:50,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:50,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-24 23:16:50,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:50,490 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;@44aeb2f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:50,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-24 23:16:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 511 states, 381 states have (on average 1.6325459317585302) internal successors, (622), 445 states have internal predecessors, (622), 52 states have call successors, (52), 15 states have call predecessors, (52), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-24 23:16:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:16:50,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:50,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:16:50,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:16:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2208675, now seen corresponding path program 1 times [2023-11-24 23:16:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:50,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495410796] [2023-11-24 23:16:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:50,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:51,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:51,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495410796] [2023-11-24 23:16:51,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495410796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:51,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:16:51,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131233173] [2023-11-24 23:16:51,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:51,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:51,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:51,218 INFO L87 Difference]: Start difference. First operand has 511 states, 381 states have (on average 1.6325459317585302) internal successors, (622), 445 states have internal predecessors, (622), 52 states have call successors, (52), 15 states have call predecessors, (52), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:51,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:51,858 INFO L93 Difference]: Finished difference Result 1015 states and 1467 transitions. [2023-11-24 23:16:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:16:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:51,884 INFO L225 Difference]: With dead ends: 1015 [2023-11-24 23:16:51,884 INFO L226 Difference]: Without dead ends: 506 [2023-11-24 23:16:51,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:51,905 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 1 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:51,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1196 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:16:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-24 23:16:52,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2023-11-24 23:16:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 378 states have (on average 1.560846560846561) internal successors, (590), 446 states have internal predecessors, (590), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:16:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 688 transitions. [2023-11-24 23:16:52,028 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 688 transitions. Word has length 3 [2023-11-24 23:16:52,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:52,029 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 688 transitions. [2023-11-24 23:16:52,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:52,030 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 688 transitions. [2023-11-24 23:16:52,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:16:52,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:52,031 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:16:52,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:16:52,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:16:52,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:52,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1374916763, now seen corresponding path program 1 times [2023-11-24 23:16:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:52,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582017736] [2023-11-24 23:16:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:52,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:52,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582017736] [2023-11-24 23:16:52,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582017736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:52,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977980652] [2023-11-24 23:16:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:52,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:52,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:52,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:52,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:16:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:52,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:52,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:52,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:52,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977980652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:52,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:52,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:16:52,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739344209] [2023-11-24 23:16:52,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:52,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:52,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:52,776 INFO L87 Difference]: Start difference. First operand 506 states and 688 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:53,242 INFO L93 Difference]: Finished difference Result 506 states and 688 transitions. [2023-11-24 23:16:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:53,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:16:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:53,250 INFO L225 Difference]: With dead ends: 506 [2023-11-24 23:16:53,250 INFO L226 Difference]: Without dead ends: 505 [2023-11-24 23:16:53,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:53,252 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 3 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:53,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1192 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:16:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-11-24 23:16:53,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2023-11-24 23:16:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 378 states have (on average 1.5582010582010581) internal successors, (589), 445 states have internal predecessors, (589), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:16:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 687 transitions. [2023-11-24 23:16:53,307 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 687 transitions. Word has length 6 [2023-11-24 23:16:53,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:53,307 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 687 transitions. [2023-11-24 23:16:53,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 687 transitions. [2023-11-24 23:16:53,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:16:53,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:53,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:16:53,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:53,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:16:53,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:16:53,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash -327252512, now seen corresponding path program 1 times [2023-11-24 23:16:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:53,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550340433] [2023-11-24 23:16:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:53,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:53,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:53,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550340433] [2023-11-24 23:16:53,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550340433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:53,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:53,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:53,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605545380] [2023-11-24 23:16:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:53,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:53,692 INFO L87 Difference]: Start difference. First operand 505 states and 687 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:54,088 INFO L93 Difference]: Finished difference Result 505 states and 687 transitions. [2023-11-24 23:16:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:16:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:54,094 INFO L225 Difference]: With dead ends: 505 [2023-11-24 23:16:54,094 INFO L226 Difference]: Without dead ends: 504 [2023-11-24 23:16:54,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:54,096 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:54,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1192 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:16:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-11-24 23:16:54,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 502. [2023-11-24 23:16:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 376 states have (on average 1.5585106382978724) internal successors, (586), 442 states have internal predecessors, (586), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:16:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 684 transitions. [2023-11-24 23:16:54,123 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 684 transitions. Word has length 7 [2023-11-24 23:16:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:54,123 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 684 transitions. [2023-11-24 23:16:54,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 684 transitions. [2023-11-24 23:16:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:16:54,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:54,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:54,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:16:54,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:16:54,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:54,126 INFO L85 PathProgramCache]: Analyzing trace with hash 476879054, now seen corresponding path program 1 times [2023-11-24 23:16:54,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:54,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560332591] [2023-11-24 23:16:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:54,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:54,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:54,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560332591] [2023-11-24 23:16:54,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560332591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:54,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515011410] [2023-11-24 23:16:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:54,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:54,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:54,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:54,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:16:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:54,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:16:54,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:54,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:54,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515011410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:54,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:54,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:16:54,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713068104] [2023-11-24 23:16:54,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:54,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:54,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:54,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:54,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:54,745 INFO L87 Difference]: Start difference. First operand 502 states and 684 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:55,134 INFO L93 Difference]: Finished difference Result 502 states and 684 transitions. [2023-11-24 23:16:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:55,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-24 23:16:55,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:55,139 INFO L225 Difference]: With dead ends: 502 [2023-11-24 23:16:55,140 INFO L226 Difference]: Without dead ends: 500 [2023-11-24 23:16:55,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:55,141 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 320 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:55,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 898 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:16:55,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-24 23:16:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2023-11-24 23:16:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 376 states have (on average 1.553191489361702) internal successors, (584), 440 states have internal predecessors, (584), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:16:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 682 transitions. [2023-11-24 23:16:55,168 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 682 transitions. Word has length 9 [2023-11-24 23:16:55,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:55,169 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 682 transitions. [2023-11-24 23:16:55,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:55,170 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 682 transitions. [2023-11-24 23:16:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:16:55,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:55,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:55,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:55,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:55,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:16:55,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1898349590, now seen corresponding path program 1 times [2023-11-24 23:16:55,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:55,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113603942] [2023-11-24 23:16:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:55,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:55,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113603942] [2023-11-24 23:16:55,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113603942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:55,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459536297] [2023-11-24 23:16:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:55,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:55,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:55,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:55,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:16:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:55,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:55,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:55,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:55,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459536297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:55,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1360227530] [2023-11-24 23:16:56,002 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:16:56,003 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:56,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:56,012 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:56,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:17:04,464 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 119 for LOIs [2023-11-24 23:17:04,530 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:17:06,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1360227530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:06,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:17:06,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-24 23:17:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311233730] [2023-11-24 23:17:06,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:17:06,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:06,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:17:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:17:06,676 INFO L87 Difference]: Start difference. First operand 500 states and 682 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:11,672 INFO L93 Difference]: Finished difference Result 502 states and 683 transitions. [2023-11-24 23:17:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:17:11,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-24 23:17:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:11,677 INFO L225 Difference]: With dead ends: 502 [2023-11-24 23:17:11,677 INFO L226 Difference]: Without dead ends: 500 [2023-11-24 23:17:11,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:17:11,679 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 6 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:11,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2556 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-24 23:17:11,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-24 23:17:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2023-11-24 23:17:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 377 states have (on average 1.546419098143236) internal successors, (583), 439 states have internal predecessors, (583), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:17:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 681 transitions. [2023-11-24 23:17:11,706 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 681 transitions. Word has length 10 [2023-11-24 23:17:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:11,706 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 681 transitions. [2023-11-24 23:17:11,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 681 transitions. [2023-11-24 23:17:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:17:11,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:11,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:11,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:11,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:11,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:17:11,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash -374276295, now seen corresponding path program 1 times [2023-11-24 23:17:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206090027] [2023-11-24 23:17:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:11,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:12,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:12,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206090027] [2023-11-24 23:17:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206090027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:12,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876347105] [2023-11-24 23:17:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:12,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:12,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:12,142 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:12,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:17:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:12,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:12,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:12,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:12,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876347105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:12,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:12,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:12,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683368453] [2023-11-24 23:17:12,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:12,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:12,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:12,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:12,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:12,497 INFO L87 Difference]: Start difference. First operand 500 states and 681 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:12,853 INFO L93 Difference]: Finished difference Result 500 states and 681 transitions. [2023-11-24 23:17:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:12,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 23:17:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:12,858 INFO L225 Difference]: With dead ends: 500 [2023-11-24 23:17:12,858 INFO L226 Difference]: Without dead ends: 499 [2023-11-24 23:17:12,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:12,859 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 7 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:12,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1173 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-24 23:17:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2023-11-24 23:17:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 377 states have (on average 1.5437665782493368) internal successors, (582), 438 states have internal predecessors, (582), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:17:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 680 transitions. [2023-11-24 23:17:12,886 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 680 transitions. Word has length 15 [2023-11-24 23:17:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:12,886 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 680 transitions. [2023-11-24 23:17:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 680 transitions. [2023-11-24 23:17:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:17:12,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:12,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:12,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:13,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:17:13,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:17:13,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash -374324261, now seen corresponding path program 1 times [2023-11-24 23:17:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199885644] [2023-11-24 23:17:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:13,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199885644] [2023-11-24 23:17:13,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199885644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169591699] [2023-11-24 23:17:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:13,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:13,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:13,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:13,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:17:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:13,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:13,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:13,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169591699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:13,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:13,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:13,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422369188] [2023-11-24 23:17:13,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:13,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:13,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:13,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:13,686 INFO L87 Difference]: Start difference. First operand 499 states and 680 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:14,067 INFO L93 Difference]: Finished difference Result 499 states and 680 transitions. [2023-11-24 23:17:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:14,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 23:17:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:14,072 INFO L225 Difference]: With dead ends: 499 [2023-11-24 23:17:14,072 INFO L226 Difference]: Without dead ends: 498 [2023-11-24 23:17:14,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:14,074 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 2 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:14,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1177 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-11-24 23:17:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2023-11-24 23:17:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 377 states have (on average 1.5411140583554377) internal successors, (581), 437 states have internal predecessors, (581), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:17:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 679 transitions. [2023-11-24 23:17:14,108 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 679 transitions. Word has length 15 [2023-11-24 23:17:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:14,108 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 679 transitions. [2023-11-24 23:17:14,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 679 transitions. [2023-11-24 23:17:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:17:14,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:14,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:14,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:14,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:17:14,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:17:14,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:14,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1282337581, now seen corresponding path program 1 times [2023-11-24 23:17:14,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:14,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936252220] [2023-11-24 23:17:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:14,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:14,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936252220] [2023-11-24 23:17:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936252220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:14,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756370183] [2023-11-24 23:17:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:14,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:14,506 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:14,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:17:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:14,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:14,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:14,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756370183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:14,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:14,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773751386] [2023-11-24 23:17:14,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:14,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:14,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:14,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:14,917 INFO L87 Difference]: Start difference. First operand 498 states and 679 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:15,318 INFO L93 Difference]: Finished difference Result 506 states and 689 transitions. [2023-11-24 23:17:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:15,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-24 23:17:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:15,323 INFO L225 Difference]: With dead ends: 506 [2023-11-24 23:17:15,323 INFO L226 Difference]: Without dead ends: 505 [2023-11-24 23:17:15,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:15,325 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 4 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:15,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1176 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:17:15,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-11-24 23:17:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 504. [2023-11-24 23:17:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 383 states have (on average 1.5404699738903394) internal successors, (590), 443 states have internal predecessors, (590), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:17:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 688 transitions. [2023-11-24 23:17:15,360 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 688 transitions. Word has length 16 [2023-11-24 23:17:15,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:15,360 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 688 transitions. [2023-11-24 23:17:15,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 688 transitions. [2023-11-24 23:17:15,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:17:15,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:15,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:15,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:15,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:15,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:17:15,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:15,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1280850626, now seen corresponding path program 1 times [2023-11-24 23:17:15,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:15,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940032762] [2023-11-24 23:17:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:15,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:15,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940032762] [2023-11-24 23:17:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940032762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595964514] [2023-11-24 23:17:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:15,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:15,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:15,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:15,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:17:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:16,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:16,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:16,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:16,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595964514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:16,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:16,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656122090] [2023-11-24 23:17:16,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:16,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:16,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:16,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:16,151 INFO L87 Difference]: Start difference. First operand 504 states and 688 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:16,475 INFO L93 Difference]: Finished difference Result 998 states and 1366 transitions. [2023-11-24 23:17:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:16,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-24 23:17:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:16,479 INFO L225 Difference]: With dead ends: 998 [2023-11-24 23:17:16,479 INFO L226 Difference]: Without dead ends: 510 [2023-11-24 23:17:16,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:16,481 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 0 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:16,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1178 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-11-24 23:17:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2023-11-24 23:17:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 389 states have (on average 1.532133676092545) internal successors, (596), 449 states have internal predecessors, (596), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:17:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 694 transitions. [2023-11-24 23:17:16,506 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 694 transitions. Word has length 16 [2023-11-24 23:17:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:16,506 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 694 transitions. [2023-11-24 23:17:16,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 694 transitions. [2023-11-24 23:17:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:17:16,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:16,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:16,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:16,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 23:17:16,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:17:16,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1327376288, now seen corresponding path program 1 times [2023-11-24 23:17:16,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:16,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149176146] [2023-11-24 23:17:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:16,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149176146] [2023-11-24 23:17:16,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149176146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:16,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861847134] [2023-11-24 23:17:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:16,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:16,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:16,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:16,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:17:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:17,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:17,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:17,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861847134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:17,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:17,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402340524] [2023-11-24 23:17:17,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:17,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:17,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:17,250 INFO L87 Difference]: Start difference. First operand 510 states and 694 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:17,509 INFO L93 Difference]: Finished difference Result 514 states and 700 transitions. [2023-11-24 23:17:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:17,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-24 23:17:17,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:17,514 INFO L225 Difference]: With dead ends: 514 [2023-11-24 23:17:17,514 INFO L226 Difference]: Without dead ends: 513 [2023-11-24 23:17:17,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:17,515 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 260 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:17,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 941 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-11-24 23:17:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2023-11-24 23:17:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 389 states have (on average 1.5295629820051413) internal successors, (595), 448 states have internal predecessors, (595), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:17:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 693 transitions. [2023-11-24 23:17:17,540 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 693 transitions. Word has length 16 [2023-11-24 23:17:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:17,540 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 693 transitions. [2023-11-24 23:17:17,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 693 transitions. [2023-11-24 23:17:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:17:17,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:17,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:17,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:17,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:17:17,749 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:17:17,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1801007176, now seen corresponding path program 1 times [2023-11-24 23:17:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:17,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276931505] [2023-11-24 23:17:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:17:17,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:17,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276931505] [2023-11-24 23:17:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276931505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:17,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964151876] [2023-11-24 23:17:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:17,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:17,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:17,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:17,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:17:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:18,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:18,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:17:18,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:18,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964151876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:18,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:18,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471778857] [2023-11-24 23:17:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:18,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:18,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:18,260 INFO L87 Difference]: Start difference. First operand 509 states and 693 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:18,668 INFO L93 Difference]: Finished difference Result 711 states and 977 transitions. [2023-11-24 23:17:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:18,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-24 23:17:18,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:18,674 INFO L225 Difference]: With dead ends: 711 [2023-11-24 23:17:18,674 INFO L226 Difference]: Without dead ends: 710 [2023-11-24 23:17:18,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:18,675 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 258 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:18,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1165 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:17:18,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-11-24 23:17:18,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 513. [2023-11-24 23:17:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.5267175572519085) internal successors, (600), 452 states have internal predecessors, (600), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:17:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 698 transitions. [2023-11-24 23:17:18,703 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 698 transitions. Word has length 17 [2023-11-24 23:17:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:18,703 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 698 transitions. [2023-11-24 23:17:18,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 698 transitions. [2023-11-24 23:17:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:17:18,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:18,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:18,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:18,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:18,912 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:17:18,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:18,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1332359832, now seen corresponding path program 1 times [2023-11-24 23:17:18,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:18,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258561289] [2023-11-24 23:17:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:18,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:17:19,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:19,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258561289] [2023-11-24 23:17:19,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258561289] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:19,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520203861] [2023-11-24 23:17:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:19,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:19,067 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:19,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:17:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:19,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:19,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:17:19,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520203861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:19,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:19,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:17:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339233697] [2023-11-24 23:17:19,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:19,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:19,451 INFO L87 Difference]: Start difference. First operand 513 states and 698 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:19,752 INFO L93 Difference]: Finished difference Result 513 states and 698 transitions. [2023-11-24 23:17:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:19,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-24 23:17:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:19,756 INFO L225 Difference]: With dead ends: 513 [2023-11-24 23:17:19,756 INFO L226 Difference]: Without dead ends: 512 [2023-11-24 23:17:19,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:17:19,757 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 0 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:19,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1175 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:17:19,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-24 23:17:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 508. [2023-11-24 23:17:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 389 states have (on average 1.5269922879177378) internal successors, (594), 447 states have internal predecessors, (594), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-24 23:17:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 692 transitions. [2023-11-24 23:17:19,783 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 692 transitions. Word has length 19 [2023-11-24 23:17:19,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:19,783 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 692 transitions. [2023-11-24 23:17:19,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:17:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 692 transitions. [2023-11-24 23:17:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:17:19,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:19,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:19,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:19,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:17:19,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [vasprintfErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vasprintfErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-24 23:17:19,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1112910591, now seen corresponding path program 1 times [2023-11-24 23:17:19,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:19,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635736862] [2023-11-24 23:17:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:19,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:17:20,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635736862] [2023-11-24 23:17:20,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635736862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121905282] [2023-11-24 23:17:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:20,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:20,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:20,130 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:20,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd6c592-8878-4c69-af43-5e46326fc098/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:17:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:20,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:17:20,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:17:20,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:17:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:17:20,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121905282] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:17:20,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1371346820] [2023-11-24 23:17:20,569 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-24 23:17:20,569 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:17:20,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:17:20,570 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:17:20,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:17:26,156 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 119 for LOIs [2023-11-24 23:17:26,185 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:17:28,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1371346820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:17:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-11-24 23:17:28,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569580200] [2023-11-24 23:17:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:28,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:17:28,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:17:28,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-24 23:17:28,865 INFO L87 Difference]: Start difference. First operand 508 states and 692 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)