./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-tiling/mlceu.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/mlceu.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0 --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 0d3cc2e7af8cdfad5003daafcde8bd8bcf193cd0b5d066a7a9bad715ddc9d422 --- 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-e04fb08 [2022-11-16 16:26:26,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:26:26,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:26:26,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:26:26,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:26:26,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:26:26,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:26:26,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:26:26,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:26:26,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:26:26,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:26:26,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:26:26,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:26:26,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:26:26,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:26:26,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:26:26,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:26:26,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:26:26,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:26:26,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:26:26,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:26:26,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:26:26,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:26:26,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:26:26,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:26:26,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:26:26,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:26:26,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:26:26,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:26:26,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:26:26,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:26:26,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:26:26,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:26:26,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:26:26,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:26:26,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:26:26,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:26:26,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:26:26,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:26:26,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:26:26,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:26:26,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-16 16:26:26,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:26:26,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:26:26,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:26:26,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:26:26,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:26:26,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:26:26,173 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:26:26,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:26:26,174 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:26:26,174 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:26:26,174 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:26:26,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:26:26,175 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:26:26,175 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:26:26,176 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:26:26,176 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:26:26,176 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:26:26,177 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:26:26,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:26:26,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:26:26,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:26:26,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:26:26,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:26:26,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:26:26,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:26:26,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:26:26,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:26:26,180 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 16:26:26,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:26:26,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:26:26,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:26:26,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:26:26,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:26:26,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:26:26,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:26:26,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:26:26,183 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:26:26,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:26:26,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:26:26,184 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:26:26,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:26:26,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:26:26,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:26:26,185 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_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d3cc2e7af8cdfad5003daafcde8bd8bcf193cd0b5d066a7a9bad715ddc9d422 [2022-11-16 16:26:26,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:26:26,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:26:26,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:26:26,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:26:26,519 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:26:26,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/array-tiling/mlceu.c [2022-11-16 16:26:26,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/data/f1b3b04f2/ee18b4e6ac994c39acbad6d99bae4e62/FLAGae0dec04c [2022-11-16 16:26:27,180 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:26:27,181 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/sv-benchmarks/c/array-tiling/mlceu.c [2022-11-16 16:26:27,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/data/f1b3b04f2/ee18b4e6ac994c39acbad6d99bae4e62/FLAGae0dec04c [2022-11-16 16:26:27,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/data/f1b3b04f2/ee18b4e6ac994c39acbad6d99bae4e62 [2022-11-16 16:26:27,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:26:27,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:26:27,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:26:27,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:26:27,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:26:27,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5992022d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27, skipping insertion in model container [2022-11-16 16:26:27,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:26:27,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:26:27,783 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/sv-benchmarks/c/array-tiling/mlceu.c[396,409] [2022-11-16 16:26:27,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:26:27,810 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:26:27,826 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/sv-benchmarks/c/array-tiling/mlceu.c[396,409] [2022-11-16 16:26:27,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:26:27,848 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:26:27,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27 WrapperNode [2022-11-16 16:26:27,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:26:27,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:26:27,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:26:27,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:26:27,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,900 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-16 16:26:27,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:26:27,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:26:27,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:26:27,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:26:27,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:26:27,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:26:27,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:26:27,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:26:27,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (1/1) ... [2022-11-16 16:26:27,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:26:27,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:27,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:26:27,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:26:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:26:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:26:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:26:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:26:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:26:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:26:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:26:28,113 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:26:28,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:26:28,407 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:26:28,498 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:26:28,502 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 16:26:28,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:28 BoogieIcfgContainer [2022-11-16 16:26:28,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:26:28,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:26:28,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:26:28,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:26:28,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:26:27" (1/3) ... [2022-11-16 16:26:28,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5fabae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:26:28, skipping insertion in model container [2022-11-16 16:26:28,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:27" (2/3) ... [2022-11-16 16:26:28,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5fabae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:26:28, skipping insertion in model container [2022-11-16 16:26:28,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:28" (3/3) ... [2022-11-16 16:26:28,521 INFO L112 eAbstractionObserver]: Analyzing ICFG mlceu.c [2022-11-16 16:26:28,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:26:28,544 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 16:26:28,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:26:28,647 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;@522c8e09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:26:28,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 16:26:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-11-16 16:26:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:26:28,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:28,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:26:28,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash 3054677, now seen corresponding path program 1 times [2022-11-16 16:26:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:28,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646002793] [2022-11-16 16:26:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:29,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:29,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646002793] [2022-11-16 16:26:29,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646002793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:29,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:26:29,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:26:29,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975505210] [2022-11-16 16:26:29,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:29,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:26:29,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:29,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:26:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:26:29,225 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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 1.3333333333333333) 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) [2022-11-16 16:26:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:29,382 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-16 16:26:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:26:29,396 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 [2022-11-16 16:26:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:29,406 INFO L225 Difference]: With dead ends: 26 [2022-11-16 16:26:29,406 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 16:26:29,409 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 [2022-11-16 16:26:29,413 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:29,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:26:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 16:26:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-11-16 16:26:29,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 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) [2022-11-16 16:26:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-16 16:26:29,467 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 4 [2022-11-16 16:26:29,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:29,467 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-16 16:26:29,468 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) [2022-11-16 16:26:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-16 16:26:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 16:26:29,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:29,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 16:26:29,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:26:29,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:29,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash 94689030, now seen corresponding path program 1 times [2022-11-16 16:26:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:29,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899181163] [2022-11-16 16:26:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:29,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:29,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:29,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899181163] [2022-11-16 16:26:29,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899181163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:29,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:26:29,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:26:29,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755695405] [2022-11-16 16:26:29,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:29,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:26:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:26:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:26:29,662 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 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) [2022-11-16 16:26:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:29,704 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-16 16:26:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:26:29,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 5 [2022-11-16 16:26:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:29,707 INFO L225 Difference]: With dead ends: 20 [2022-11-16 16:26:29,708 INFO L226 Difference]: Without dead ends: 15 [2022-11-16 16:26:29,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:26:29,711 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:29,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:26:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-16 16:26:29,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-16 16:26:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-11-16 16:26:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-16 16:26:29,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2022-11-16 16:26:29,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:29,724 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-16 16:26:29,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-16 16:26:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-16 16:26:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 16:26:29,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:29,728 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-16 16:26:29,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:26:29,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:29,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:29,736 INFO L85 PathProgramCache]: Analyzing trace with hash 807633336, now seen corresponding path program 1 times [2022-11-16 16:26:29,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:29,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129923239] [2022-11-16 16:26:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:29,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:29,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:29,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129923239] [2022-11-16 16:26:29,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129923239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:26:29,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491110346] [2022-11-16 16:26:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:29,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:29,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:29,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:26:29,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:26:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:30,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:26:30,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:30,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:26:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:30,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491110346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:26:30,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1396765961] [2022-11-16 16:26:30,203 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-16 16:26:30,203 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:26:30,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:26:30,213 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:26:30,214 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:26:30,399 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-16 16:26:30,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-16 16:26:30,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-16 16:26:30,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 221 [2022-11-16 16:26:30,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:30,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 118 [2022-11-16 16:26:30,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 16:26:31,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:31,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 11 select indices, 11 select index equivalence classes, 33 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 238 [2022-11-16 16:26:31,124 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 16:26:31,249 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 15 treesize of output 11 [2022-11-16 16:26:31,259 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 15 treesize of output 11 [2022-11-16 16:26:31,319 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:26:32,254 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '166#(and (<= 0 ~SIZE~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |#NULL.offset| 0) (<= ~SIZE~0 2147483647) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 16:26:32,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:26:32,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:26:32,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 16:26:32,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473351257] [2022-11-16 16:26:32,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:26:32,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 16:26:32,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:32,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 16:26:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-16 16:26:32,258 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-11-16 16:26:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:32,461 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-16 16:26:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 16:26:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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 [2022-11-16 16:26:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:32,464 INFO L225 Difference]: With dead ends: 33 [2022-11-16 16:26:32,464 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 16:26:32,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2022-11-16 16:26:32,466 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:32,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 26 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:26:32,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 16:26:32,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-11-16 16:26:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 22 states have internal predecessors, (29), 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) [2022-11-16 16:26:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-11-16 16:26:32,476 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 7 [2022-11-16 16:26:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:32,476 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-11-16 16:26:32,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-11-16 16:26:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-11-16 16:26:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:26:32,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:32,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-16 16:26:32,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:26:32,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:32,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:32,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash -733170297, now seen corresponding path program 1 times [2022-11-16 16:26:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:32,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878393554] [2022-11-16 16:26:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:32,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:32,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:32,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878393554] [2022-11-16 16:26:32,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878393554] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:26:32,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253799852] [2022-11-16 16:26:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:32,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:32,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:32,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:26:32,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:26:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:32,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:26:32,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:32,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:26:32,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253799852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:32,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:26:32,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 16:26:32,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249392460] [2022-11-16 16:26:32,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:32,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:26:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:32,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:26:32,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:26:32,991 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-16 16:26:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:33,057 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2022-11-16 16:26:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:26:33,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2022-11-16 16:26:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:33,062 INFO L225 Difference]: With dead ends: 28 [2022-11-16 16:26:33,062 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 16:26:33,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-16 16:26:33,068 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:33,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:26:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 16:26:33,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-16 16:26:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-11-16 16:26:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-16 16:26:33,081 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2022-11-16 16:26:33,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:33,081 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-16 16:26:33,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-16 16:26:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-16 16:26:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:26:33,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:33,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:33,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:26:33,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:33,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:33,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash -733176317, now seen corresponding path program 1 times [2022-11-16 16:26:33,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:33,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273085943] [2022-11-16 16:26:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:33,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:26:33,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:33,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273085943] [2022-11-16 16:26:33,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273085943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:33,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:26:33,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:26:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017254932] [2022-11-16 16:26:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:33,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:26:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:26:33,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:26:33,404 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-11-16 16:26:33,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:33,439 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-11-16 16:26:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:26:33,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-11-16 16:26:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:33,440 INFO L225 Difference]: With dead ends: 27 [2022-11-16 16:26:33,441 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 16:26:33,441 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 [2022-11-16 16:26:33,442 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:33,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 13 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:26:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 16:26:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 16:26:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 24 states have internal predecessors, (29), 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) [2022-11-16 16:26:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-16 16:26:33,448 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8 [2022-11-16 16:26:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:33,448 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-16 16:26:33,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-11-16 16:26:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-16 16:26:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:26:33,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:33,449 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:33,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:26:33,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:33,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2146869475, now seen corresponding path program 1 times [2022-11-16 16:26:33,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:33,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239173744] [2022-11-16 16:26:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:33,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:26:33,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:33,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239173744] [2022-11-16 16:26:33,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239173744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:26:33,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591688938] [2022-11-16 16:26:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:33,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:33,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:33,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:26:33,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:26:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:33,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 16:26:33,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:33,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:26:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:33,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591688938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:26:33,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1415513203] [2022-11-16 16:26:33,823 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:26:33,824 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:26:33,824 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:26:33,824 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:26:33,825 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:26:33,932 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-16 16:26:33,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-16 16:26:33,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-16 16:26:34,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 221 [2022-11-16 16:26:34,075 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 16:26:34,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:34,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:34,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 11 select indices, 11 select index equivalence classes, 33 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 248 [2022-11-16 16:26:34,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:34,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 152 [2022-11-16 16:26:34,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2022-11-16 16:26:34,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-16 16:26:34,543 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 15 treesize of output 11 [2022-11-16 16:26:34,552 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 15 treesize of output 11 [2022-11-16 16:26:34,903 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:26:36,265 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '496#(and (<= 0 ~SIZE~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post7#1|) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= ~SIZE~0 2147483647) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 16:26:36,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:26:36,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:26:36,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 14 [2022-11-16 16:26:36,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590998036] [2022-11-16 16:26:36,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:26:36,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:26:36,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:26:36,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-11-16 16:26:36,268 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2022-11-16 16:26:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:36,519 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-11-16 16:26:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 16:26:36,520 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 11 [2022-11-16 16:26:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:36,520 INFO L225 Difference]: With dead ends: 38 [2022-11-16 16:26:36,521 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 16:26:36,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2022-11-16 16:26:36,522 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:36,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 17 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:26:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 16:26:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-16 16:26:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.25) internal successors, (30), 26 states have internal predecessors, (30), 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) [2022-11-16 16:26:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-16 16:26:36,527 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2022-11-16 16:26:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:36,528 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-16 16:26:36,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2022-11-16 16:26:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-11-16 16:26:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 16:26:36,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:36,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-16 16:26:36,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:26:36,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:36,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash 182015808, now seen corresponding path program 1 times [2022-11-16 16:26:36,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:36,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631991400] [2022-11-16 16:26:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 16:26:36,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:36,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631991400] [2022-11-16 16:26:36,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631991400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:26:36,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764684775] [2022-11-16 16:26:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:36,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:36,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:36,884 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:26:36,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:26:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:36,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:26:36,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 16:26:37,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:26:37,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764684775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:37,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:26:37,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 16:26:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860155173] [2022-11-16 16:26:37,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:37,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:26:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:26:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:26:37,010 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-16 16:26:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:37,065 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-16 16:26:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:26:37,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 15 [2022-11-16 16:26:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:37,067 INFO L225 Difference]: With dead ends: 27 [2022-11-16 16:26:37,067 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 16:26:37,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-16 16:26:37,068 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:37,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:26:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 16:26:37,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-16 16:26:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 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) [2022-11-16 16:26:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-16 16:26:37,074 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2022-11-16 16:26:37,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:37,075 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-16 16:26:37,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-16 16:26:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-16 16:26:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 16:26:37,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:37,076 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2022-11-16 16:26:37,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:26:37,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:37,283 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1914111637, now seen corresponding path program 2 times [2022-11-16 16:26:37,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810560496] [2022-11-16 16:26:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:37,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:37,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810560496] [2022-11-16 16:26:37,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810560496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:26:37,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751437665] [2022-11-16 16:26:37,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:26:37,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:37,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:37,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:26:37,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 16:26:37,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 16:26:37,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:26:37,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:26:37,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 16:26:37,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:26:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 16:26:37,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751437665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:26:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1213065462] [2022-11-16 16:26:37,724 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-16 16:26:37,724 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:26:37,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:26:37,725 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:26:37,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:26:37,818 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-16 16:26:37,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-16 16:26:37,919 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-16 16:26:37,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-16 16:26:37,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 221 [2022-11-16 16:26:38,018 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 16:26:38,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:38,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:38,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:38,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 11 select indices, 11 select index equivalence classes, 33 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 238 [2022-11-16 16:26:38,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 16:26:38,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:38,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:38,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 113 [2022-11-16 16:26:38,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:38,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 16:26:38,371 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 15 treesize of output 11 [2022-11-16 16:26:38,381 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 15 treesize of output 11 [2022-11-16 16:26:38,427 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:26:39,241 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '827#(and (<= 0 ~SIZE~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= ~SIZE~0 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 16:26:39,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:26:39,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:26:39,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2022-11-16 16:26:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609933517] [2022-11-16 16:26:39,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:26:39,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:26:39,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:39,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:26:39,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-16 16:26:39,244 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 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) [2022-11-16 16:26:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:39,538 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-16 16:26:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 16:26:39,539 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 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 16 [2022-11-16 16:26:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:39,540 INFO L225 Difference]: With dead ends: 30 [2022-11-16 16:26:39,540 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 16:26:39,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2022-11-16 16:26:39,541 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:39,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 10 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:26:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 16:26:39,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2022-11-16 16:26:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-11-16 16:26:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-16 16:26:39,546 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2022-11-16 16:26:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:39,546 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-16 16:26:39,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 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) [2022-11-16 16:26:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-16 16:26:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 16:26:39,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:39,548 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 16:26:39,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:26:39,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:39,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:26:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1176464026, now seen corresponding path program 2 times [2022-11-16 16:26:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:39,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139169090] [2022-11-16 16:26:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:39,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:39,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139169090] [2022-11-16 16:26:39,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139169090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:26:39,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571402898] [2022-11-16 16:26:39,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:26:39,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:39,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:39,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:26:39,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 16:26:40,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 16:26:40,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:26:40,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:26:40,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 16:26:40,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:26:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 16:26:40,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571402898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:26:40,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [656914986] [2022-11-16 16:26:40,142 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:26:40,142 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:26:40,142 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:26:40,143 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:26:40,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:26:40,230 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-16 16:26:40,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-16 16:26:40,309 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-16 16:26:40,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-16 16:26:40,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 221 [2022-11-16 16:26:40,475 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 16:26:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:40,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:40,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:40,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 11 select indices, 11 select index equivalence classes, 33 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 238 [2022-11-16 16:26:40,653 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 16:26:40,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 16:26:41,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:26:41,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,225 INFO L321 Elim1Store]: treesize reduction 146, result has 4.6 percent of original size [2022-11-16 16:26:41,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 12 select indices, 12 select index equivalence classes, 42 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 23 case distinctions, treesize of input 964 treesize of output 960 [2022-11-16 16:26:41,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:26:41,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 685 treesize of output 669 [2022-11-16 16:26:41,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:26:41,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:26:41,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 669 treesize of output 669 [2022-11-16 16:26:41,764 INFO L321 Elim1Store]: treesize reduction 48, result has 18.6 percent of original size [2022-11-16 16:26:41,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 559 treesize of output 519 [2022-11-16 16:26:41,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:26:41,810 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 16:26:41,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 444 treesize of output 422 [2022-11-16 16:26:42,148 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 15 treesize of output 11 [2022-11-16 16:26:42,159 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 15 treesize of output 11 [2022-11-16 16:26:42,448 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:26:43,712 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1027#(and (<= 0 ~SIZE~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (< 2147483646 |ULTIMATE.start_main_#t~post7#1|) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= ~SIZE~0 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 16:26:43,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:26:43,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:26:43,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 2, 2] total 14 [2022-11-16 16:26:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481469808] [2022-11-16 16:26:43,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:26:43,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:26:43,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:43,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:26:43,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-16 16:26:43,714 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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) [2022-11-16 16:26:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:44,046 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-16 16:26:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 16:26:44,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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) Word has length 17 [2022-11-16 16:26:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:44,048 INFO L225 Difference]: With dead ends: 33 [2022-11-16 16:26:44,048 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 16:26:44,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 16:26:44,050 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:44,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:26:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 16:26:44,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 16:26:44,051 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) [2022-11-16 16:26:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 16:26:44,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-11-16 16:26:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:44,052 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 16:26:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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) [2022-11-16 16:26:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 16:26:44,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 16:26:44,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-16 16:26:44,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-16 16:26:44,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-16 16:26:44,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-16 16:26:44,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 16:26:44,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:26:44,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 16:26:44,350 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2022-11-16 16:26:44,351 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-11-16 16:26:44,351 INFO L899 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2022-11-16 16:26:44,351 INFO L895 garLoopResultBuilder]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= ~SIZE~0 2147483647))) (or (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0) (and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~SIZE~0) .cse0))) [2022-11-16 16:26:44,351 INFO L899 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2022-11-16 16:26:44,351 INFO L899 garLoopResultBuilder]: For program point L36-4(line 36) no Hoare annotation was computed. [2022-11-16 16:26:44,352 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-16 16:26:44,352 INFO L895 garLoopResultBuilder]: At program point L36-5(lines 36 39) the Hoare annotation is: (let ((.cse0 (<= ~SIZE~0 2147483647))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0))) [2022-11-16 16:26:44,352 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 16:26:44,352 INFO L902 garLoopResultBuilder]: At program point L41(lines 14 42) the Hoare annotation is: true [2022-11-16 16:26:44,352 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-16 16:26:44,352 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 16:26:44,352 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-16 16:26:44,352 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2022-11-16 16:26:44,356 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-11-16 16:26:44,358 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:26:44,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:26:44 BoogieIcfgContainer [2022-11-16 16:26:44,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:26:44,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:26:44,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:26:44,375 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:26:44,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:28" (3/4) ... [2022-11-16 16:26:44,379 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 16:26:44,390 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-16 16:26:44,390 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-16 16:26:44,390 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 16:26:44,391 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 16:26:44,391 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 16:26:44,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 16:26:44,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:26:44,439 INFO L158 Benchmark]: Toolchain (without parser) took 16927.02ms. Allocated memory was 90.2MB in the beginning and 192.9MB in the end (delta: 102.8MB). Free memory was 55.4MB in the beginning and 106.3MB in the end (delta: -50.9MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2022-11-16 16:26:44,439 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:26:44,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.97ms. Allocated memory is still 90.2MB. Free memory was 55.2MB in the beginning and 67.5MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:26:44,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.70ms. Allocated memory is still 90.2MB. Free memory was 67.5MB in the beginning and 65.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:26:44,441 INFO L158 Benchmark]: Boogie Preprocessor took 28.78ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 64.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:26:44,442 INFO L158 Benchmark]: RCFGBuilder took 577.75ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 50.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:26:44,443 INFO L158 Benchmark]: TraceAbstraction took 15862.25ms. Allocated memory was 90.2MB in the beginning and 192.9MB in the end (delta: 102.8MB). Free memory was 49.8MB in the beginning and 108.4MB in the end (delta: -58.6MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2022-11-16 16:26:44,444 INFO L158 Benchmark]: Witness Printer took 63.88ms. Allocated memory is still 192.9MB. Free memory was 108.4MB in the beginning and 106.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:26:44,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.97ms. Allocated memory is still 90.2MB. Free memory was 55.2MB in the beginning and 67.5MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.70ms. Allocated memory is still 90.2MB. Free memory was 67.5MB in the beginning and 65.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.78ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 64.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 577.75ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 50.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15862.25ms. Allocated memory was 90.2MB in the beginning and 192.9MB in the end (delta: 102.8MB). Free memory was 49.8MB in the beginning and 108.4MB in the end (delta: -58.6MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. * Witness Printer took 63.88ms. Allocated memory is still 192.9MB. Free memory was 108.4MB in the beginning and 106.3MB in the end (delta: 2.1MB). 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: 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, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 15.7s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 406 IncrementalHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 37 mSDtfsCounter, 406 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 259 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, InterpolantAutomatonStates: 78, 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, 9 MinimizatonAttempts, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 15 NumberOfFragments, 34 HoareAnnotationTreeSize, 3 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 149 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 165 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 17 NumberOfNonLiveVariables, 543 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 89/152 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (1 <= i && SIZE <= 2147483647) || ((i == 0 && 1 <= SIZE) && SIZE <= 2147483647) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (i == 0 && SIZE <= 2147483647) || (1 <= i && SIZE <= 2147483647) RESULT: Ultimate proved your program to be correct! [2022-11-16 16:26:44,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c9f56-0d46-43c3-bbfc-85bc077cfda1/bin/utaipan-Xvt2sAort0/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