./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/head-3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5 --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 c5bd754d8b8f4ee0e5d64ce8be5479928d2ed38d23ef60f76e73d0a8955b4a59 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:04:03,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:04:04,066 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-21 19:04:04,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:04:04,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:04:04,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:04:04,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:04:04,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:04:04,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:04:04,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:04:04,110 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:04:04,111 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:04:04,111 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:04:04,112 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:04:04,112 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:04:04,113 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:04:04,113 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:04:04,114 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:04:04,115 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:04:04,115 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:04:04,116 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:04:04,120 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:04:04,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:04:04,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:04:04,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:04:04,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:04:04,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:04:04,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:04:04,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:04:04,124 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 19:04:04,124 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:04:04,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:04:04,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:04:04,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:04:04,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:04:04,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:04:04,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:04:04,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:04:04,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:04:04,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:04:04,128 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:04:04,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:04:04,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:04:04,131 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:04:04,131 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:04:04,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:04:04,132 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_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5bd754d8b8f4ee0e5d64ce8be5479928d2ed38d23ef60f76e73d0a8955b4a59 [2023-11-21 19:04:04,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:04:04,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:04:04,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:04:04,460 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:04:04,461 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:04:04,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/busybox-1.22.0/head-3.i [2023-11-21 19:04:07,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:04:07,991 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:04:07,992 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/sv-benchmarks/c/busybox-1.22.0/head-3.i [2023-11-21 19:04:08,025 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/data/b6799a239/2df6281819124b0c93be5a61d5c7c36c/FLAGf40401201 [2023-11-21 19:04:08,041 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/data/b6799a239/2df6281819124b0c93be5a61d5c7c36c [2023-11-21 19:04:08,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:04:08,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:04:08,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:04:08,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:04:08,056 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:04:08,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:04:08" (1/1) ... [2023-11-21 19:04:08,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a830824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:08, skipping insertion in model container [2023-11-21 19:04:08,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:04:08" (1/1) ... [2023-11-21 19:04:08,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:04:09,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:04:09,877 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:04:10,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:04:10,322 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,323 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,323 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,323 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,323 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,324 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,324 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,324 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,324 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:04:10,333 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:04:10,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10 WrapperNode [2023-11-21 19:04:10,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:04:10,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:04:10,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:04:10,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:04:10,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,514 INFO L138 Inliner]: procedures = 581, calls = 371, calls flagged for inlining = 30, calls inlined = 28, statements flattened = 1136 [2023-11-21 19:04:10,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:04:10,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:04:10,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:04:10,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:04:10,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:04:10,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:04:10,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:04:10,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:04:10,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (1/1) ... [2023-11-21 19:04:10,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:04:10,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:10,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:04:10,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:04:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-21 19:04:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-21 19:04:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-21 19:04:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-11-21 19:04:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2023-11-21 19:04:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-21 19:04:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-21 19:04:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-21 19:04:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:04:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 19:04:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-21 19:04:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-21 19:04:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-21 19:04:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:04:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:04:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:04:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-21 19:04:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-21 19:04:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:04:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:04:10,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:04:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:04:10,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 19:04:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 19:04:10,762 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-21 19:04:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-21 19:04:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure getopt [2023-11-21 19:04:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getopt [2023-11-21 19:04:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 19:04:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:04:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-21 19:04:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-21 19:04:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-21 19:04:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:04:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:04:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:04:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:04:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-21 19:04:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-21 19:04:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-21 19:04:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:04:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgets [2023-11-21 19:04:10,766 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgets [2023-11-21 19:04:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-21 19:04:10,766 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-21 19:04:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:04:11,330 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:04:11,332 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:04:12,674 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:04:13,034 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:04:13,034 INFO L308 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-21 19:04:13,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:04:13 BoogieIcfgContainer [2023-11-21 19:04:13,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:04:13,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:04:13,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:04:13,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:04:13,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:04:08" (1/3) ... [2023-11-21 19:04:13,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bde550a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:04:13, skipping insertion in model container [2023-11-21 19:04:13,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:04:10" (2/3) ... [2023-11-21 19:04:13,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bde550a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:04:13, skipping insertion in model container [2023-11-21 19:04:13,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:04:13" (3/3) ... [2023-11-21 19:04:13,046 INFO L112 eAbstractionObserver]: Analyzing ICFG head-3.i [2023-11-21 19:04:13,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:04:13,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-11-21 19:04:13,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:04:13,134 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;@addeea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:04:13,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-11-21 19:04:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 228 states have (on average 1.644736842105263) internal successors, (375), 280 states have internal predecessors, (375), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-21 19:04:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 19:04:13,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:13,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 19:04:13,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:13,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1156806, now seen corresponding path program 1 times [2023-11-21 19:04:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221027291] [2023-11-21 19:04:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:13,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:13,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221027291] [2023-11-21 19:04:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221027291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:13,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:04:13,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:04:13,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301893685] [2023-11-21 19:04:13,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:13,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:13,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:04:13,787 INFO L87 Difference]: Start difference. First operand has 322 states, 228 states have (on average 1.644736842105263) internal successors, (375), 280 states have internal predecessors, (375), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) 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) [2023-11-21 19:04:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:14,094 INFO L93 Difference]: Finished difference Result 631 states and 879 transitions. [2023-11-21 19:04:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:14,097 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 [2023-11-21 19:04:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:14,109 INFO L225 Difference]: With dead ends: 631 [2023-11-21 19:04:14,110 INFO L226 Difference]: Without dead ends: 311 [2023-11-21 19:04:14,118 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 [2023-11-21 19:04:14,121 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:14,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 698 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:04:14,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-21 19:04:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-11-21 19:04:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 222 states have (on average 1.5675675675675675) internal successors, (348), 275 states have internal predecessors, (348), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 404 transitions. [2023-11-21 19:04:14,224 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 404 transitions. Word has length 3 [2023-11-21 19:04:14,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:14,225 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 404 transitions. [2023-11-21 19:04:14,225 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) [2023-11-21 19:04:14,225 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 404 transitions. [2023-11-21 19:04:14,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 19:04:14,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:14,226 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 19:04:14,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:04:14,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:14,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash 103173465, now seen corresponding path program 1 times [2023-11-21 19:04:14,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343424359] [2023-11-21 19:04:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:14,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:14,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:14,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343424359] [2023-11-21 19:04:14,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343424359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:14,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393900772] [2023-11-21 19:04:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:14,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:14,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:14,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:14,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:04:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:14,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:04:14,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:14,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:04:14,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393900772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:14,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:04:14,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-21 19:04:14,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339057039] [2023-11-21 19:04:14,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:14,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:04:14,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:14,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:04:14,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:04:14,781 INFO L87 Difference]: Start difference. First operand 311 states and 404 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) [2023-11-21 19:04:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:15,021 INFO L93 Difference]: Finished difference Result 311 states and 404 transitions. [2023-11-21 19:04:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:04:15,022 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 [2023-11-21 19:04:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:15,025 INFO L225 Difference]: With dead ends: 311 [2023-11-21 19:04:15,025 INFO L226 Difference]: Without dead ends: 310 [2023-11-21 19:04:15,026 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 [2023-11-21 19:04:15,027 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:15,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1041 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:04:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-21 19:04:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2023-11-21 19:04:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 222 states have (on average 1.563063063063063) internal successors, (347), 274 states have internal predecessors, (347), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 403 transitions. [2023-11-21 19:04:15,050 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 403 transitions. Word has length 6 [2023-11-21 19:04:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:15,051 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 403 transitions. [2023-11-21 19:04:15,051 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) [2023-11-21 19:04:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 403 transitions. [2023-11-21 19:04:15,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 19:04:15,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:15,052 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-21 19:04:15,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:15,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:15,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1096589373, now seen corresponding path program 1 times [2023-11-21 19:04:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763786738] [2023-11-21 19:04:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:15,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:04:15,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:15,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763786738] [2023-11-21 19:04:15,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763786738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:15,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:04:15,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:04:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063785087] [2023-11-21 19:04:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:15,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:04:15,437 INFO L87 Difference]: Start difference. First operand 310 states and 403 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) [2023-11-21 19:04:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:15,605 INFO L93 Difference]: Finished difference Result 310 states and 403 transitions. [2023-11-21 19:04:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:15,605 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 [2023-11-21 19:04:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:15,608 INFO L225 Difference]: With dead ends: 310 [2023-11-21 19:04:15,608 INFO L226 Difference]: Without dead ends: 309 [2023-11-21 19:04:15,611 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 [2023-11-21 19:04:15,613 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 0 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:15,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 694 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:04:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-21 19:04:15,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2023-11-21 19:04:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 220 states have (on average 1.5636363636363637) internal successors, (344), 271 states have internal predecessors, (344), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 400 transitions. [2023-11-21 19:04:15,634 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 400 transitions. Word has length 7 [2023-11-21 19:04:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:15,638 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 400 transitions. [2023-11-21 19:04:15,638 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) [2023-11-21 19:04:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 400 transitions. [2023-11-21 19:04:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:04:15,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:15,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:15,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:04:15,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:15,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash -880472440, now seen corresponding path program 1 times [2023-11-21 19:04:15,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:15,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918798420] [2023-11-21 19:04:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:15,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:15,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918798420] [2023-11-21 19:04:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918798420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245059699] [2023-11-21 19:04:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:15,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:15,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:15,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:15,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:04:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:16,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:04:16,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:04:16,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:04:16,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245059699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:16,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:04:16,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:04:16,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149844274] [2023-11-21 19:04:16,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:16,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:16,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:16,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:16,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:04:16,185 INFO L87 Difference]: Start difference. First operand 307 states and 400 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) [2023-11-21 19:04:16,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:16,374 INFO L93 Difference]: Finished difference Result 307 states and 400 transitions. [2023-11-21 19:04:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:16,375 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 [2023-11-21 19:04:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:16,378 INFO L225 Difference]: With dead ends: 307 [2023-11-21 19:04:16,379 INFO L226 Difference]: Without dead ends: 305 [2023-11-21 19:04:16,379 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 [2023-11-21 19:04:16,381 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 162 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:16,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 536 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:04:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-21 19:04:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-11-21 19:04:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 220 states have (on average 1.5545454545454545) internal successors, (342), 269 states have internal predecessors, (342), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 398 transitions. [2023-11-21 19:04:16,402 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 398 transitions. Word has length 9 [2023-11-21 19:04:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:16,404 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 398 transitions. [2023-11-21 19:04:16,404 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) [2023-11-21 19:04:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 398 transitions. [2023-11-21 19:04:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:04:16,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:16,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:16,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:16,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:16,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:16,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1524841347, now seen corresponding path program 1 times [2023-11-21 19:04:16,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:16,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153789062] [2023-11-21 19:04:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:16,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:16,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153789062] [2023-11-21 19:04:16,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153789062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943278731] [2023-11-21 19:04:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:16,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:16,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:16,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:04:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:17,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:04:17,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:17,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:04:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943278731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:04:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1986416071] [2023-11-21 19:04:17,158 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-21 19:04:17,159 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:04:17,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:04:17,168 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:04:17,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:04:26,437 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-11-21 19:04:26,482 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:04:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1986416071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:27,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:04:27,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-21 19:04:27,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089371177] [2023-11-21 19:04:27,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:27,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 19:04:27,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:27,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 19:04:27,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-21 19:04:27,971 INFO L87 Difference]: Start difference. First operand 305 states and 398 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) [2023-11-21 19:04:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:30,298 INFO L93 Difference]: Finished difference Result 307 states and 399 transitions. [2023-11-21 19:04:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:04:30,299 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 [2023-11-21 19:04:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:30,302 INFO L225 Difference]: With dead ends: 307 [2023-11-21 19:04:30,302 INFO L226 Difference]: Without dead ends: 305 [2023-11-21 19:04:30,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-21 19:04:30,303 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 6 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:30,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1437 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-21 19:04:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-21 19:04:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-11-21 19:04:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 221 states have (on average 1.5429864253393666) internal successors, (341), 268 states have internal predecessors, (341), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 397 transitions. [2023-11-21 19:04:30,323 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 397 transitions. Word has length 10 [2023-11-21 19:04:30,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:30,323 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 397 transitions. [2023-11-21 19:04:30,323 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) [2023-11-21 19:04:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 397 transitions. [2023-11-21 19:04:30,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:04:30,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:30,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:30,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-21 19:04:30,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:30,546 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:30,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1793981835, now seen corresponding path program 1 times [2023-11-21 19:04:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:30,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117408927] [2023-11-21 19:04:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:30,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117408927] [2023-11-21 19:04:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117408927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344392757] [2023-11-21 19:04:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:30,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:30,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:30,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:30,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:04:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:31,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:04:31,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:04:31,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:04:31,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344392757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:31,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:04:31,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:04:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641534665] [2023-11-21 19:04:31,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:31,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:31,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:04:31,135 INFO L87 Difference]: Start difference. First operand 305 states and 397 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) [2023-11-21 19:04:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:31,370 INFO L93 Difference]: Finished difference Result 305 states and 397 transitions. [2023-11-21 19:04:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:31,373 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 [2023-11-21 19:04:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:31,375 INFO L225 Difference]: With dead ends: 305 [2023-11-21 19:04:31,375 INFO L226 Difference]: Without dead ends: 304 [2023-11-21 19:04:31,376 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 [2023-11-21 19:04:31,376 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 2 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:31,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 681 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:04:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-21 19:04:31,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-11-21 19:04:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 221 states have (on average 1.5384615384615385) internal successors, (340), 267 states have internal predecessors, (340), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 396 transitions. [2023-11-21 19:04:31,401 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 396 transitions. Word has length 15 [2023-11-21 19:04:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:31,402 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 396 transitions. [2023-11-21 19:04:31,402 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) [2023-11-21 19:04:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 396 transitions. [2023-11-21 19:04:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:04:31,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:31,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:31,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:31,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:31,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:31,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1793960405, now seen corresponding path program 1 times [2023-11-21 19:04:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112750588] [2023-11-21 19:04:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:31,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112750588] [2023-11-21 19:04:31,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112750588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642289811] [2023-11-21 19:04:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:31,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:31,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:31,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:31,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 19:04:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:32,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:04:32,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:04:32,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:04:32,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642289811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:32,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:04:32,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:04:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329430425] [2023-11-21 19:04:32,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:32,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:32,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:32,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:32,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:04:32,135 INFO L87 Difference]: Start difference. First operand 304 states and 396 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) [2023-11-21 19:04:32,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:32,334 INFO L93 Difference]: Finished difference Result 304 states and 396 transitions. [2023-11-21 19:04:32,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:32,335 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 [2023-11-21 19:04:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:32,337 INFO L225 Difference]: With dead ends: 304 [2023-11-21 19:04:32,338 INFO L226 Difference]: Without dead ends: 303 [2023-11-21 19:04:32,338 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 [2023-11-21 19:04:32,339 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 6 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:32,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 674 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:04:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-21 19:04:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2023-11-21 19:04:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 221 states have (on average 1.5339366515837105) internal successors, (339), 266 states have internal predecessors, (339), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 395 transitions. [2023-11-21 19:04:32,369 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 395 transitions. Word has length 15 [2023-11-21 19:04:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:32,370 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 395 transitions. [2023-11-21 19:04:32,370 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) [2023-11-21 19:04:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 395 transitions. [2023-11-21 19:04:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 19:04:32,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:32,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:32,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:32,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:32,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash 221138505, now seen corresponding path program 1 times [2023-11-21 19:04:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:32,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430553995] [2023-11-21 19:04:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:32,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430553995] [2023-11-21 19:04:32,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430553995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121792831] [2023-11-21 19:04:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:32,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:32,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:32,750 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:32,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 19:04:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:33,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:04:33,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:04:33,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:04:33,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121792831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:33,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:04:33,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:04:33,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334219939] [2023-11-21 19:04:33,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:33,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:33,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:33,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:33,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:04:33,083 INFO L87 Difference]: Start difference. First operand 303 states and 395 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) [2023-11-21 19:04:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:33,273 INFO L93 Difference]: Finished difference Result 597 states and 782 transitions. [2023-11-21 19:04:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:33,274 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 [2023-11-21 19:04:33,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:33,277 INFO L225 Difference]: With dead ends: 597 [2023-11-21 19:04:33,277 INFO L226 Difference]: Without dead ends: 306 [2023-11-21 19:04:33,278 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 [2023-11-21 19:04:33,279 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 0 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:33,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 680 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:04:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-21 19:04:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2023-11-21 19:04:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 224 states have (on average 1.5267857142857142) internal successors, (342), 269 states have internal predecessors, (342), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 398 transitions. [2023-11-21 19:04:33,297 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 398 transitions. Word has length 16 [2023-11-21 19:04:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:33,298 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 398 transitions. [2023-11-21 19:04:33,298 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) [2023-11-21 19:04:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 398 transitions. [2023-11-21 19:04:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 19:04:33,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:33,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:33,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:33,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:33,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:33,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:33,509 INFO L85 PathProgramCache]: Analyzing trace with hash -542096270, now seen corresponding path program 1 times [2023-11-21 19:04:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935835800] [2023-11-21 19:04:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:33,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 19:04:33,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:33,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935835800] [2023-11-21 19:04:33,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935835800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:33,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357242340] [2023-11-21 19:04:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:33,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:33,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:33,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:33,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 19:04:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:33,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:04:33,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:04:33,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:04:33,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357242340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:33,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:04:33,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:04:33,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543146088] [2023-11-21 19:04:33,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:33,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:33,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:33,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:04:33,994 INFO L87 Difference]: Start difference. First operand 306 states and 398 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) [2023-11-21 19:04:34,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:34,170 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2023-11-21 19:04:34,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:34,170 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 [2023-11-21 19:04:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:34,173 INFO L225 Difference]: With dead ends: 306 [2023-11-21 19:04:34,173 INFO L226 Difference]: Without dead ends: 305 [2023-11-21 19:04:34,173 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 [2023-11-21 19:04:34,174 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 0 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:34,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 679 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:04:34,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-21 19:04:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2023-11-21 19:04:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 222 states have (on average 1.527027027027027) internal successors, (339), 266 states have internal predecessors, (339), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 395 transitions. [2023-11-21 19:04:34,192 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 395 transitions. Word has length 19 [2023-11-21 19:04:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:34,192 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 395 transitions. [2023-11-21 19:04:34,192 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) [2023-11-21 19:04:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 395 transitions. [2023-11-21 19:04:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 19:04:34,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:34,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:34,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:34,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:34,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:34,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash -541431931, now seen corresponding path program 1 times [2023-11-21 19:04:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:34,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215547581] [2023-11-21 19:04:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:34,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:04:34,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:34,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215547581] [2023-11-21 19:04:34,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215547581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313574084] [2023-11-21 19:04:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:34,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:34,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:34,570 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:34,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 19:04:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:34,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:04:34,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:04:34,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:04:34,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313574084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:34,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:04:34,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:04:34,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795379675] [2023-11-21 19:04:34,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:34,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:04:34,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:04:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:04:34,915 INFO L87 Difference]: Start difference. First operand 303 states and 395 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) [2023-11-21 19:04:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:35,109 INFO L93 Difference]: Finished difference Result 311 states and 405 transitions. [2023-11-21 19:04:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:04:35,110 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 [2023-11-21 19:04:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:35,112 INFO L225 Difference]: With dead ends: 311 [2023-11-21 19:04:35,113 INFO L226 Difference]: Without dead ends: 310 [2023-11-21 19:04:35,113 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 [2023-11-21 19:04:35,114 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 0 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:35,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 676 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:04:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-21 19:04:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2023-11-21 19:04:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 229 states have (on average 1.519650655021834) internal successors, (348), 273 states have internal predecessors, (348), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 404 transitions. [2023-11-21 19:04:35,132 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 404 transitions. Word has length 19 [2023-11-21 19:04:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:35,132 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 404 transitions. [2023-11-21 19:04:35,133 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) [2023-11-21 19:04:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 404 transitions. [2023-11-21 19:04:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 19:04:35,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:35,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:35,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:35,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 19:04:35,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:35,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1359160575, now seen corresponding path program 1 times [2023-11-21 19:04:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799493010] [2023-11-21 19:04:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:35,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:35,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799493010] [2023-11-21 19:04:35,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799493010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:35,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247568840] [2023-11-21 19:04:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:35,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:35,542 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:35,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 19:04:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:35,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:04:35,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:35,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:04:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:04:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247568840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:04:35,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610698655] [2023-11-21 19:04:35,915 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-21 19:04:35,915 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:04:35,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:04:35,916 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:04:35,916 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:04:42,721 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-11-21 19:04:42,746 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:04:45,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [610698655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:04:45,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:04:45,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-11-21 19:04:45,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013453798] [2023-11-21 19:04:45,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:04:45,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 19:04:45,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:04:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 19:04:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-21 19:04:45,035 INFO L87 Difference]: Start difference. First operand 310 states and 404 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:04:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:04:47,561 INFO L93 Difference]: Finished difference Result 593 states and 776 transitions. [2023-11-21 19:04:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:04:47,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-21 19:04:47,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:04:47,564 INFO L225 Difference]: With dead ends: 593 [2023-11-21 19:04:47,564 INFO L226 Difference]: Without dead ends: 310 [2023-11-21 19:04:47,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-21 19:04:47,566 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 2 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:04:47,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1424 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 527 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-21 19:04:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-21 19:04:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2023-11-21 19:04:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 229 states have (on average 1.51528384279476) internal successors, (347), 273 states have internal predecessors, (347), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:04:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 403 transitions. [2023-11-21 19:04:47,591 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 403 transitions. Word has length 22 [2023-11-21 19:04:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:04:47,594 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 403 transitions. [2023-11-21 19:04:47,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:04:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 403 transitions. [2023-11-21 19:04:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 19:04:47,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:04:47,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:04:47,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 19:04:47,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 19:04:47,816 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:04:47,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:04:47,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1861032799, now seen corresponding path program 1 times [2023-11-21 19:04:47,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:04:47,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166866672] [2023-11-21 19:04:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:04:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 19:04:48,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:04:48,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166866672] [2023-11-21 19:04:48,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166866672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:04:48,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556062535] [2023-11-21 19:04:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:04:48,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:04:48,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:04:48,013 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:04:48,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f608464-464e-41f8-bcfc-0541bc5be42f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 19:04:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:04:48,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:04:48,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:04:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 19:04:48,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:04:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 19:04:48,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556062535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:04:48,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [397973533] [2023-11-21 19:04:48,394 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-21 19:04:48,395 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:04:48,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:04:48,395 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:04:48,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs