./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrpbrk-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrpbrk-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --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 32bit --witnessprinter.graph.data.programhash d450427152972d80716d02c80706dd3b248a3fc7c05c71ffd29d66e32e1e82f2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:57:48,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:57:48,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:57:48,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:57:48,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:57:48,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:57:48,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:57:48,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:57:48,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:57:48,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:57:48,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:57:48,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:57:48,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:57:48,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:57:48,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:57:48,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:57:48,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:57:48,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:57:48,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:57:48,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:57:48,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:57:48,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:57:48,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:57:48,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:57:48,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:57:48,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:57:48,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:57:48,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:57:48,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:57:48,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:57:48,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:57:48,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:57:48,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:57:48,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:57:48,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:57:48,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:57:48,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:57:48,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:57:48,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:57:48,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:57:48,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:57:48,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 06:57:48,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:57:48,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:57:48,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:57:48,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:57:48,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:57:48,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:57:48,992 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:57:48,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:57:48,993 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:57:48,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:57:48,993 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:57:48,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:57:48,993 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:57:48,993 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:57:48,994 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:57:48,994 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:57:48,994 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:57:48,994 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:57:48,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:57:48,995 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:57:48,995 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:57:48,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:57:48,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:57:48,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:57:48,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:57:48,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:57:48,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:57:48,996 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:57:48,996 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:57:48,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:57:48,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:57:48,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:57:48,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:57:48,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:57:48,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:57:48,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:57:49,003 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:57:49,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:57:49,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:57:49,004 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:57:49,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:57:49,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:57:49,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:57:49,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d450427152972d80716d02c80706dd3b248a3fc7c05c71ffd29d66e32e1e82f2 [2022-11-19 06:57:49,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:57:49,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:57:49,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:57:49,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:57:49,321 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:57:49,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-memsafety/openbsd_cstrpbrk-alloca-2.i [2022-11-19 06:57:49,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/data/28c1c6618/c820faa612e84d4bb60974dec9c49f28/FLAGf09bfdecf [2022-11-19 06:57:49,874 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:57:49,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/sv-benchmarks/c/array-memsafety/openbsd_cstrpbrk-alloca-2.i [2022-11-19 06:57:49,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/data/28c1c6618/c820faa612e84d4bb60974dec9c49f28/FLAGf09bfdecf [2022-11-19 06:57:50,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/data/28c1c6618/c820faa612e84d4bb60974dec9c49f28 [2022-11-19 06:57:50,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:57:50,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:57:50,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:57:50,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:57:50,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:57:50,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da902c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50, skipping insertion in model container [2022-11-19 06:57:50,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:57:50,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:57:50,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:57:50,675 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:57:50,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:57:50,774 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:57:50,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50 WrapperNode [2022-11-19 06:57:50,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:57:50,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:57:50,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:57:50,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:57:50,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,850 INFO L138 Inliner]: procedures = 117, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2022-11-19 06:57:50,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:57:50,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:57:50,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:57:50,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:57:50,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,885 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:57:50,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:57:50,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:57:50,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:57:50,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (1/1) ... [2022-11-19 06:57:50,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:57:50,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:57:50,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:57:50,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:57:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:57:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:57:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:57:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:57:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:57:50,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:57:51,077 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:57:51,079 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:57:51,231 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:57:51,322 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:57:51,323 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 06:57:51,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:57:51 BoogieIcfgContainer [2022-11-19 06:57:51,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:57:51,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:57:51,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:57:51,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:57:51,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:57:50" (1/3) ... [2022-11-19 06:57:51,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8ce563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:57:51, skipping insertion in model container [2022-11-19 06:57:51,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:50" (2/3) ... [2022-11-19 06:57:51,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8ce563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:57:51, skipping insertion in model container [2022-11-19 06:57:51,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:57:51" (3/3) ... [2022-11-19 06:57:51,333 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrpbrk-alloca-2.i [2022-11-19 06:57:51,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:57:51,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 06:57:51,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:57:51,400 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=LoopsAndPotentialCycles, 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;@7934ff35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:57:51,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-19 06:57:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 26 states have internal predecessors, (33), 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) [2022-11-19 06:57:51,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:57:51,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:51,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:57:51,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:57:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:51,416 INFO L85 PathProgramCache]: Analyzing trace with hash 134659, now seen corresponding path program 1 times [2022-11-19 06:57:51,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:51,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087277156] [2022-11-19 06:57:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:51,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:51,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:51,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087277156] [2022-11-19 06:57:51,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087277156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:51,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:57:51,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:57:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732613830] [2022-11-19 06:57:51,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:57:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:57:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:57:51,905 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 26 states have internal predecessors, (33), 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-11-19 06:57:52,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:52,015 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2022-11-19 06:57:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:57:52,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 [2022-11-19 06:57:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:52,025 INFO L225 Difference]: With dead ends: 61 [2022-11-19 06:57:52,026 INFO L226 Difference]: Without dead ends: 35 [2022-11-19 06:57:52,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:57:52,032 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:52,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 68 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-19 06:57:52,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2022-11-19 06:57:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 21 states have internal predecessors, (24), 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) [2022-11-19 06:57:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-11-19 06:57:52,082 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 3 [2022-11-19 06:57:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:52,082 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-11-19 06:57:52,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-11-19 06:57:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-11-19 06:57:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:57:52,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:52,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:57:52,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:57:52,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:57:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash 4188299, now seen corresponding path program 1 times [2022-11-19 06:57:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:52,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139696101] [2022-11-19 06:57:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:52,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:52,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139696101] [2022-11-19 06:57:52,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139696101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:52,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:57:52,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:57:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652151178] [2022-11-19 06:57:52,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:52,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:57:52,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:57:52,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:57:52,175 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-19 06:57:52,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:52,220 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-11-19 06:57:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:57:52,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-11-19 06:57:52,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:52,224 INFO L225 Difference]: With dead ends: 35 [2022-11-19 06:57:52,224 INFO L226 Difference]: Without dead ends: 33 [2022-11-19 06:57:52,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:57:52,226 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:52,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:57:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-19 06:57:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2022-11-19 06:57:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-11-19 06:57:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-19 06:57:52,232 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 4 [2022-11-19 06:57:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:52,232 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-19 06:57:52,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-19 06:57:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-19 06:57:52,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:57:52,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:52,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:57:52,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:57:52,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:57:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash 4188399, now seen corresponding path program 1 times [2022-11-19 06:57:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:52,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278083104] [2022-11-19 06:57:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:52,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:52,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278083104] [2022-11-19 06:57:52,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278083104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:52,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:57:52,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:57:52,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217560615] [2022-11-19 06:57:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:52,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:57:52,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:57:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:57:52,302 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-19 06:57:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:52,343 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-11-19 06:57:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:57:52,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-19 06:57:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:52,345 INFO L225 Difference]: With dead ends: 41 [2022-11-19 06:57:52,345 INFO L226 Difference]: Without dead ends: 40 [2022-11-19 06:57:52,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:57:52,354 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:52,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 37 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:57:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-19 06:57:52,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2022-11-19 06:57:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.625) internal successors, (39), 31 states have internal predecessors, (39), 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) [2022-11-19 06:57:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-19 06:57:52,361 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 4 [2022-11-19 06:57:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:52,362 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-19 06:57:52,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-19 06:57:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-11-19 06:57:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:57:52,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:52,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:57:52,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:57:52,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:57:52,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:52,365 INFO L85 PathProgramCache]: Analyzing trace with hash 129840453, now seen corresponding path program 1 times [2022-11-19 06:57:52,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:52,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670774643] [2022-11-19 06:57:52,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:52,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:52,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:52,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670774643] [2022-11-19 06:57:52,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670774643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:52,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:57:52,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:57:52,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666930646] [2022-11-19 06:57:52,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:52,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:57:52,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:57:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:57:52,445 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-19 06:57:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:52,462 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2022-11-19 06:57:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:57:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-19 06:57:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:52,463 INFO L225 Difference]: With dead ends: 32 [2022-11-19 06:57:52,464 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:57:52,464 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 [2022-11-19 06:57:52,465 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:52,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:57:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:57:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 06:57:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 30 states have internal predecessors, (38), 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) [2022-11-19 06:57:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-19 06:57:52,471 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 5 [2022-11-19 06:57:52,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:52,472 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-19 06:57:52,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-19 06:57:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-11-19 06:57:52,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:57:52,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:52,473 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 06:57:52,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:57:52,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:57:52,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:52,474 INFO L85 PathProgramCache]: Analyzing trace with hash -283280365, now seen corresponding path program 1 times [2022-11-19 06:57:52,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:52,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637004329] [2022-11-19 06:57:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:52,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:52,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:52,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637004329] [2022-11-19 06:57:52,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637004329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:52,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064260513] [2022-11-19 06:57:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:52,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:57:52,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:57:52,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:57:52,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:57:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:52,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:57:52,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:52,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:52,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064260513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:57:52,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1279550363] [2022-11-19 06:57:52,861 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-19 06:57:52,861 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:57:52,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:57:52,871 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:57:52,871 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:57:53,043 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 06:57:53,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 19 [2022-11-19 06:57:53,135 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 06:57:53,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 06:57:53,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:53,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:53,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:53,396 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:57:53,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1279550363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:53,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:57:53,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 12 [2022-11-19 06:57:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146981227] [2022-11-19 06:57:53,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:53,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:57:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:57:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:57:53,615 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-19 06:57:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:53,689 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-11-19 06:57:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:57:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 [2022-11-19 06:57:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:53,692 INFO L225 Difference]: With dead ends: 31 [2022-11-19 06:57:53,693 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 06:57:53,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:57:53,696 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:53,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 06:57:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 12. [2022-11-19 06:57:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-11-19 06:57:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-19 06:57:53,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2022-11-19 06:57:53,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:53,704 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-19 06:57:53,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-19 06:57:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-19 06:57:53,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:57:53,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:53,705 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-19 06:57:53,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:57:53,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:57:53,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:57:53,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash 219642027, now seen corresponding path program 1 times [2022-11-19 06:57:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:53,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899569530] [2022-11-19 06:57:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:53,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:54,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:54,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899569530] [2022-11-19 06:57:54,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899569530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:54,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244792555] [2022-11-19 06:57:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:54,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:57:54,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:57:54,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:57:54,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:57:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:54,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:57:54,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:54,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:54,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244792555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:57:54,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [612517263] [2022-11-19 06:57:54,240 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-19 06:57:54,240 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:57:54,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:57:54,240 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:57:54,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:57:54,297 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 06:57:54,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 19 [2022-11-19 06:57:54,333 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 06:57:54,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 06:57:54,357 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:57:54,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [612517263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:54,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:57:54,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5] total 15 [2022-11-19 06:57:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627099629] [2022-11-19 06:57:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:54,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:57:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:57:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:57:54,580 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2022-11-19 06:57:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:54,607 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-19 06:57:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:57:54,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 7 [2022-11-19 06:57:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:54,611 INFO L225 Difference]: With dead ends: 23 [2022-11-19 06:57:54,611 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 06:57:54,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:57:54,612 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:54,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:57:54,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 06:57:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2022-11-19 06:57:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-11-19 06:57:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-19 06:57:54,620 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-11-19 06:57:54,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:54,620 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-19 06:57:54,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2022-11-19 06:57:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-19 06:57:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:57:54,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:54,621 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:57:54,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:57:54,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:57:54,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:57:54,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:54,823 INFO L85 PathProgramCache]: Analyzing trace with hash 95248059, now seen corresponding path program 1 times [2022-11-19 06:57:54,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:54,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146601301] [2022-11-19 06:57:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:54,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:57:54,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:54,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146601301] [2022-11-19 06:57:54,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146601301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:54,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116782956] [2022-11-19 06:57:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:54,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:57:54,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:57:54,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:57:54,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:57:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:54,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:57:54,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:57:55,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:57:55,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116782956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:57:55,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [755375415] [2022-11-19 06:57:55,089 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:57:55,090 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:57:55,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:57:55,090 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:57:55,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:57:55,124 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 06:57:55,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 19 [2022-11-19 06:57:55,160 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 06:57:55,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 06:57:55,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:55,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:55,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:55,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:55,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2022-11-19 06:57:55,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:55,426 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:57:55,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 90 [2022-11-19 06:57:55,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:55,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:55,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:57:55,642 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:57:56,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [755375415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:56,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:57:56,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 16 [2022-11-19 06:57:56,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490397402] [2022-11-19 06:57:56,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:56,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 06:57:56,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 06:57:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:57:56,856 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-19 06:57:56,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:56,906 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-19 06:57:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:56,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 10 [2022-11-19 06:57:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:56,907 INFO L225 Difference]: With dead ends: 13 [2022-11-19 06:57:56,907 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:57:56,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:57:56,908 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:56,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:57:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:57:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:57:56,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-19 06:57:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:57:56,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-19 06:57:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:56,910 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:57:56,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-19 06:57:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:57:56,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:57:56,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-19 06:57:56,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-19 06:57:56,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-19 06:57:56,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-19 06:57:56,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-19 06:57:56,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-19 06:57:56,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-19 06:57:56,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-19 06:57:56,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:57:57,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 06:57:57,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:57:57,614 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 541) no Hoare annotation was computed. [2022-11-19 06:57:57,614 INFO L902 garLoopResultBuilder]: At program point L523(lines 513 524) the Hoare annotation is: true [2022-11-19 06:57:57,614 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 547) no Hoare annotation was computed. [2022-11-19 06:57:57,614 INFO L899 garLoopResultBuilder]: For program point L519-1(lines 519 521) no Hoare annotation was computed. [2022-11-19 06:57:57,615 INFO L902 garLoopResultBuilder]: At program point L519-3(lines 519 521) the Hoare annotation is: true [2022-11-19 06:57:57,615 INFO L902 garLoopResultBuilder]: At program point L519-4(lines 518 522) the Hoare annotation is: true [2022-11-19 06:57:57,615 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-19 06:57:57,615 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:57:57,615 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 546) no Hoare annotation was computed. [2022-11-19 06:57:57,615 INFO L899 garLoopResultBuilder]: For program point L520(lines 520 521) no Hoare annotation was computed. [2022-11-19 06:57:57,615 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-19 06:57:57,615 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:57:57,616 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 546) no Hoare annotation was computed. [2022-11-19 06:57:57,616 INFO L899 garLoopResultBuilder]: For program point L541-3(line 541) no Hoare annotation was computed. [2022-11-19 06:57:57,616 INFO L899 garLoopResultBuilder]: For program point L541-4(line 541) no Hoare annotation was computed. [2022-11-19 06:57:57,616 INFO L895 garLoopResultBuilder]: At program point L541-5(lines 541 544) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~1#1|))) (and (or (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~length1~0#1|)) .cse0) (let ((.cse1 (<= 0 |ULTIMATE.start_main_#t~malloc8#1.offset|)) (.cse2 (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.offset|)) (.cse3 (<= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0)) (.cse4 (<= |ULTIMATE.start_main_#t~malloc8#1.offset| 0)) (.cse5 (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|)) (.cse6 (<= 1 |ULTIMATE.start_main_~length1~0#1|)) (.cse7 (<= 0 |ULTIMATE.start_main_#t~malloc9#1.offset|)) (.cse8 (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|)) (.cse9 (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.base|)) (.cse10 (<= 1 |ULTIMATE.start_main_~length2~0#1|)) (.cse11 (<= |ULTIMATE.start_main_~length1~0#1| 2147483647)) (.cse12 (<= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0)) (.cse13 (<= |ULTIMATE.start_main_#t~malloc9#1.offset| 0))) (or (and .cse1 .cse2 .cse3 (<= 0 |ULTIMATE.start_main_~i~1#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~i~1#1| 0) .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse0 .cse12 .cse13))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.base|) (= |#NULL.base| 0))) [2022-11-19 06:57:57,616 INFO L899 garLoopResultBuilder]: For program point L541-6(lines 541 544) no Hoare annotation was computed. [2022-11-19 06:57:57,617 INFO L899 garLoopResultBuilder]: For program point L537-3(line 537) no Hoare annotation was computed. [2022-11-19 06:57:57,617 INFO L899 garLoopResultBuilder]: For program point L537-4(line 537) no Hoare annotation was computed. [2022-11-19 06:57:57,617 INFO L895 garLoopResultBuilder]: At program point L537-5(lines 537 540) the Hoare annotation is: (and (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.offset|) (<= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (= |ULTIMATE.start_main_#t~malloc9#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.base|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) (<= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.base|) (= |#NULL.base| 0)) [2022-11-19 06:57:57,617 INFO L899 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2022-11-19 06:57:57,617 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 541) no Hoare annotation was computed. [2022-11-19 06:57:57,617 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 547) no Hoare annotation was computed. [2022-11-19 06:57:57,617 INFO L899 garLoopResultBuilder]: For program point L518-1(lines 518 522) no Hoare annotation was computed. [2022-11-19 06:57:57,617 INFO L899 garLoopResultBuilder]: For program point L547(line 547) no Hoare annotation was computed. [2022-11-19 06:57:57,618 INFO L899 garLoopResultBuilder]: For program point L518-3(lines 518 522) no Hoare annotation was computed. [2022-11-19 06:57:57,618 INFO L899 garLoopResultBuilder]: For program point L547-1(line 547) no Hoare annotation was computed. [2022-11-19 06:57:57,621 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:57:57,623 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:57:57,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:57:57 BoogieIcfgContainer [2022-11-19 06:57:57,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:57:57,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:57:57,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:57:57,648 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:57:57,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:57:51" (3/4) ... [2022-11-19 06:57:57,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:57:57,660 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-19 06:57:57,660 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 06:57:57,660 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 06:57:57,661 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:57:57,708 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:57:57,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:57:57,709 INFO L158 Benchmark]: Toolchain (without parser) took 7494.19ms. Allocated memory was 107.0MB in the beginning and 184.5MB in the end (delta: 77.6MB). Free memory was 64.5MB in the beginning and 149.5MB in the end (delta: -85.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:57:57,710 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 91.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:57:57,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.05ms. Allocated memory is still 107.0MB. Free memory was 64.2MB in the beginning and 76.0MB in the end (delta: -11.8MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-11-19 06:57:57,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.05ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 73.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:57:57,711 INFO L158 Benchmark]: Boogie Preprocessor took 36.40ms. Allocated memory is still 107.0MB. Free memory was 73.8MB in the beginning and 72.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:57:57,711 INFO L158 Benchmark]: RCFGBuilder took 436.59ms. Allocated memory is still 107.0MB. Free memory was 72.2MB in the beginning and 56.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 06:57:57,715 INFO L158 Benchmark]: TraceAbstraction took 6320.01ms. Allocated memory was 107.0MB in the beginning and 184.5MB in the end (delta: 77.6MB). Free memory was 55.8MB in the beginning and 152.7MB in the end (delta: -96.9MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. [2022-11-19 06:57:57,716 INFO L158 Benchmark]: Witness Printer took 60.77ms. Allocated memory is still 184.5MB. Free memory was 152.7MB in the beginning and 149.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:57:57,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 91.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.05ms. Allocated memory is still 107.0MB. Free memory was 64.2MB in the beginning and 76.0MB in the end (delta: -11.8MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.05ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 73.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.40ms. Allocated memory is still 107.0MB. Free memory was 73.8MB in the beginning and 72.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 436.59ms. Allocated memory is still 107.0MB. Free memory was 72.2MB in the beginning and 56.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6320.01ms. Allocated memory was 107.0MB in the beginning and 184.5MB in the end (delta: 77.6MB). Free memory was 55.8MB in the beginning and 152.7MB in the end (delta: -96.9MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. * Witness Printer took 60.77ms. Allocated memory is still 184.5MB. Free memory was 152.7MB in the beginning and 149.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 541]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 541]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 546]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 546]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 547]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 547]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 6.2s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 173 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 69 mSDtfsCounter, 126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 14 NumberOfFragments, 178 HoareAnnotationTreeSize, 5 FomulaSimplifications, 146 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 616 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 6 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 3/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 1.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 14, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 36, TOOLS_POST_TIME: 1.0s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME: 1.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 71, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 7, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 14, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME: 0.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 7, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 153, DAG_COMPRESSION_RETAINED_NODES: 67, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 513]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 541]: Loop Invariant Derived loop invariant: (((((((!(i < length1) || 1 <= i) && (((((((((((((((0 <= __builtin_alloca (length1 * sizeof(char)) && 0 <= nondetString2) && nondetString2 <= 0) && 0 <= i) && __builtin_alloca (length1 * sizeof(char)) <= 0) && 0 <= nondetString1) && 1 <= length1) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 0 <= __builtin_alloca (length1 * sizeof(char))) && 0 <= nondetString1) && i <= 0) && 1 <= length2) && length1 <= 2147483647) && nondetString1 <= 0) && __builtin_alloca (length2 * sizeof(char)) <= 0) || ((((((((((((((0 <= __builtin_alloca (length1 * sizeof(char)) && 0 <= nondetString2) && nondetString2 <= 0) && 1 <= i) && __builtin_alloca (length1 * sizeof(char)) <= 0) && 0 <= nondetString1) && 1 <= length1) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 0 <= __builtin_alloca (length1 * sizeof(char))) && 0 <= nondetString1) && 1 <= length2) && length1 <= 2147483647) && 1 <= i) && nondetString1 <= 0) && __builtin_alloca (length2 * sizeof(char)) <= 0))) && #NULL == 0) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= nondetString2) && #NULL == 0 - InvariantResult [Line: 518]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 519]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 537]: Loop Invariant Derived loop invariant: ((((((((((((((((__builtin_alloca (length1 * sizeof(char)) == 0 && 0 <= nondetString2) && nondetString2 <= 0) && 0 <= nondetString1) && 1 <= length1) && 0 <= __builtin_alloca (length1 * sizeof(char))) && __builtin_alloca (length2 * sizeof(char)) == 0) && 0 <= nondetString1) && 1 <= length2) && 0 <= i) && length1 <= 2147483647) && nondetString1 <= 0) && #NULL == 0) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= nondetString2) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 06:57:57,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a75830f-d613-47ab-806f-7fceaa4bfa7e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE