./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ef2b56a2f4ebf2e6f7f4ededf8760f087ff726b08e36644d8dcb52a8d087cd1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:28:11,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:28:11,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:28:11,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:28:11,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:28:11,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:28:11,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:28:11,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:28:11,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:28:11,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:28:11,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:28:11,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:28:11,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:28:11,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:28:11,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:28:11,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:28:11,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:28:11,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:28:11,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:28:11,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:28:11,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:28:11,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:28:11,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:28:11,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:28:11,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:28:11,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:28:11,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:28:11,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:28:11,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:28:11,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:28:11,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:28:11,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:28:11,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:28:11,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:28:11,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:28:11,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:28:11,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:28:11,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:28:11,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:28:11,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:28:11,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:28:11,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 08:28:11,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:28:11,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:28:11,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:28:11,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:28:11,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:28:11,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:28:11,289 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:28:11,289 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:28:11,289 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:28:11,289 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:28:11,290 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:28:11,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:28:11,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:28:11,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:28:11,292 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:28:11,292 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:28:11,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:28:11,292 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:28:11,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:28:11,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:28:11,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:28:11,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:28:11,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:28:11,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:28:11,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:28:11,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:28:11,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:28:11,296 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 08:28:11,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:28:11,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:28:11,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:28:11,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:28:11,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:28:11,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:28:11,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:28:11,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:28:11,299 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:28:11,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:28:11,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:28:11,299 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:28:11,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:28:11,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:28:11,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:28:11,300 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_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ef2b56a2f4ebf2e6f7f4ededf8760f087ff726b08e36644d8dcb52a8d087cd1 [2022-11-19 08:28:11,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:28:11,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:28:11,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:28:11,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:28:11,598 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:28:11,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c [2022-11-19 08:28:11,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/data/f3ed91008/eae0e6b35452461294a4f930e47993b7/FLAGd0b76b533 [2022-11-19 08:28:12,170 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:28:12,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c [2022-11-19 08:28:12,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/data/f3ed91008/eae0e6b35452461294a4f930e47993b7/FLAGd0b76b533 [2022-11-19 08:28:12,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/data/f3ed91008/eae0e6b35452461294a4f930e47993b7 [2022-11-19 08:28:12,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:28:12,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:28:12,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:28:12,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:28:12,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:28:12,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4a7d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12, skipping insertion in model container [2022-11-19 08:28:12,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:28:12,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:28:12,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:12,829 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:28:12,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:12,860 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:28:12,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12 WrapperNode [2022-11-19 08:28:12,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:28:12,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:28:12,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:28:12,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:28:12,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,901 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-11-19 08:28:12,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:28:12,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:28:12,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:28:12,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:28:12,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:28:12,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:28:12,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:28:12,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:28:12,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (1/1) ... [2022-11-19 08:28:12,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:28:12,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:12,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:28:12,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:28:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:28:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:28:13,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:28:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:28:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:28:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:28:13,114 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:28:13,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:28:13,298 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:28:13,350 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:28:13,350 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:28:13,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:13 BoogieIcfgContainer [2022-11-19 08:28:13,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:28:13,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:28:13,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:28:13,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:28:13,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:28:12" (1/3) ... [2022-11-19 08:28:13,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d78bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:13, skipping insertion in model container [2022-11-19 08:28:13,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:12" (2/3) ... [2022-11-19 08:28:13,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d78bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:13, skipping insertion in model container [2022-11-19 08:28:13,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:13" (3/3) ... [2022-11-19 08:28:13,365 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6.c [2022-11-19 08:28:13,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:28:13,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 08:28:13,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:28:13,513 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;@76816ac7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:28:13,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-19 08:28:13,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:28:13,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:13,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:28:13,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:13,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 3080367, now seen corresponding path program 1 times [2022-11-19 08:28:13,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:13,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086334730] [2022-11-19 08:28:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:13,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:13,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:13,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086334730] [2022-11-19 08:28:13,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086334730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:13,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:13,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:28:13,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60810659] [2022-11-19 08:28:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:28:13,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:28:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:28:13,958 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 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) [2022-11-19 08:28:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:14,064 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-11-19 08:28:14,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:28:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 08:28:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:14,075 INFO L225 Difference]: With dead ends: 37 [2022-11-19 08:28:14,075 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 08:28:14,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:28:14,082 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:14,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 44 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:28:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 08:28:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2022-11-19 08:28:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 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) [2022-11-19 08:28:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-19 08:28:14,120 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2022-11-19 08:28:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:14,121 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-19 08:28:14,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-19 08:28:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:28:14,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:14,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:28:14,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:28:14,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:14,130 INFO L85 PathProgramCache]: Analyzing trace with hash 3080503, now seen corresponding path program 1 times [2022-11-19 08:28:14,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:14,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717963565] [2022-11-19 08:28:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:14,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:14,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:14,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717963565] [2022-11-19 08:28:14,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717963565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:14,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:14,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:28:14,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53233232] [2022-11-19 08:28:14,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:14,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:28:14,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:14,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:28:14,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:14,254 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:14,283 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-11-19 08:28:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:28:14,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 08:28:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:14,287 INFO L225 Difference]: With dead ends: 39 [2022-11-19 08:28:14,287 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 08:28:14,288 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 [2022-11-19 08:28:14,289 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 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 [2022-11-19 08:28:14,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:28:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 08:28:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 08:28:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-19 08:28:14,301 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2022-11-19 08:28:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:14,301 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-19 08:28:14,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-19 08:28:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:28:14,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:14,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:28:14,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:28:14,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash 97524663, now seen corresponding path program 1 times [2022-11-19 08:28:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:14,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794553944] [2022-11-19 08:28:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:14,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794553944] [2022-11-19 08:28:14,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794553944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:14,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:14,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:28:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408877392] [2022-11-19 08:28:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:14,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:28:14,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:28:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:28:14,433 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:14,495 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-11-19 08:28:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:28:14,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 08:28:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:14,496 INFO L225 Difference]: With dead ends: 43 [2022-11-19 08:28:14,497 INFO L226 Difference]: Without dead ends: 37 [2022-11-19 08:28:14,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:28:14,498 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:14,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:28:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-19 08:28:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2022-11-19 08:28:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-19 08:28:14,504 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2022-11-19 08:28:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:14,504 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-19 08:28:14,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-19 08:28:14,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:28:14,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:14,506 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-19 08:28:14,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:28:14,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:14,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1572955220, now seen corresponding path program 1 times [2022-11-19 08:28:14,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:14,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847781828] [2022-11-19 08:28:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:14,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:14,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847781828] [2022-11-19 08:28:14,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847781828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:28:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802820863] [2022-11-19 08:28:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:14,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:14,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:28:14,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:28:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:14,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:28:14,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:14,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:28:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:14,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802820863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:28:14,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1517233697] [2022-11-19 08:28:14,908 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-19 08:28:14,908 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:28:14,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:28:14,917 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:28:14,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:28:15,019 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 08:28:15,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-19 08:28:15,050 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:28:15,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 08:28:15,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:15,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:28:15,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 218 [2022-11-19 08:28:15,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:15,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:15,713 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:28:15,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1517233697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:15,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:28:15,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5] total 14 [2022-11-19 08:28:15,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967872085] [2022-11-19 08:28:15,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:15,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:28:15,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:28:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:28:15,993 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:16,477 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-11-19 08:28:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:28:16,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 08:28:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:16,479 INFO L225 Difference]: With dead ends: 37 [2022-11-19 08:28:16,479 INFO L226 Difference]: Without dead ends: 35 [2022-11-19 08:28:16,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:28:16,480 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:16,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 36 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:28:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-19 08:28:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2022-11-19 08:28:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-19 08:28:16,488 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 7 [2022-11-19 08:28:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:16,488 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-19 08:28:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-19 08:28:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:28:16,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:16,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:16,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:16,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:16,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:16,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:16,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1572955356, now seen corresponding path program 1 times [2022-11-19 08:28:16,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:16,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832601140] [2022-11-19 08:28:16,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:16,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:28:16,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:16,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832601140] [2022-11-19 08:28:16,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832601140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:16,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:16,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:28:16,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267939922] [2022-11-19 08:28:16,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:16,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:28:16,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:16,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:28:16,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:28:16,826 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:16,877 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-19 08:28:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:28:16,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 08:28:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:16,879 INFO L225 Difference]: With dead ends: 33 [2022-11-19 08:28:16,880 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 08:28:16,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:28:16,882 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 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 [2022-11-19 08:28:16,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:28:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 08:28:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 08:28:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.36) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-11-19 08:28:16,899 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 7 [2022-11-19 08:28:16,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:16,900 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-11-19 08:28:16,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-11-19 08:28:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 08:28:16,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:16,901 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 08:28:16,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:28:16,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:16,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash -7750956, now seen corresponding path program 1 times [2022-11-19 08:28:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:16,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595760521] [2022-11-19 08:28:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:16,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:28:17,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:17,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595760521] [2022-11-19 08:28:17,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595760521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:28:17,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778568605] [2022-11-19 08:28:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:17,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:17,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:17,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:28:17,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:28:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:17,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:28:17,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:28:17,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:28:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:28:17,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778568605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:28:17,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1898477455] [2022-11-19 08:28:17,233 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 08:28:17,233 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:28:17,234 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:28:17,234 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:28:17,234 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:28:17,263 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 08:28:17,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-19 08:28:17,288 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:28:17,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 08:28:17,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:17,441 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:17,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 217 [2022-11-19 08:28:17,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:17,661 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 [2022-11-19 08:28:17,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:17,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:17,881 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 [2022-11-19 08:28:17,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:17,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:28:17,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 120 [2022-11-19 08:28:18,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:18,154 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 [2022-11-19 08:28:18,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:18,262 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:18,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 119 [2022-11-19 08:28:18,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:18,406 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 [2022-11-19 08:28:18,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:18,439 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:28:18,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1898477455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:18,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:28:18,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 17 [2022-11-19 08:28:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285617992] [2022-11-19 08:28:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:18,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:28:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:28:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:28:18,991 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:19,080 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-19 08:28:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:28:19,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 08:28:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:19,083 INFO L225 Difference]: With dead ends: 31 [2022-11-19 08:28:19,083 INFO L226 Difference]: Without dead ends: 28 [2022-11-19 08:28:19,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:28:19,084 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:19,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:28:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-19 08:28:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-11-19 08:28:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-19 08:28:19,096 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2022-11-19 08:28:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:19,097 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-19 08:28:19,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-19 08:28:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 08:28:19,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:19,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-19 08:28:19,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:19,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 08:28:19,317 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash -7750820, now seen corresponding path program 1 times [2022-11-19 08:28:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:19,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874095186] [2022-11-19 08:28:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:19,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:28:19,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:19,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874095186] [2022-11-19 08:28:19,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874095186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:28:19,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267640620] [2022-11-19 08:28:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:19,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:19,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:19,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:28:19,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:28:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:19,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:28:19,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:28:19,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:28:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:28:19,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267640620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:28:19,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213279350] [2022-11-19 08:28:19,570 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 08:28:19,571 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:28:19,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:28:19,571 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:28:19,571 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:28:19,594 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:28:19,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 08:28:19,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-19 08:28:19,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:19,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:28:19,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 218 [2022-11-19 08:28:19,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:19,861 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 [2022-11-19 08:28:19,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:20,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:20,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:20,080 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 [2022-11-19 08:28:20,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:20,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:28:20,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 120 [2022-11-19 08:28:20,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:20,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 08:28:20,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:20,462 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:20,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 119 [2022-11-19 08:28:20,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:20,575 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 [2022-11-19 08:28:20,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:20,607 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:28:21,323 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '740#(and (<= |ULTIMATE.start_foo_#in~b#1.offset| 0) (= |ULTIMATE.start_main_~#mask~0#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~b#1.offset|) (<= |ULTIMATE.start_foo_#res#1| 2147483647) (not (<= |ULTIMATE.start_main_#t~post2#1| 2147483646)) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 32 |ULTIMATE.start_foo_~size#1|) (<= 0 |ULTIMATE.start_foo_#in~b#1.base|) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~b#1.base|) (<= 0 |ULTIMATE.start_foo_#in~b#1.offset|) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (= |ULTIMATE.start_foo_#res#1| (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) (+ |ULTIMATE.start_main_~#b~0#1.offset| (* |ULTIMATE.start_main_~i~1#1| 4)))) (= 32 |ULTIMATE.start_foo_#in~size#1|) (<= 0 |ULTIMATE.start_main_~#mask~0#1.base|) (= |#NULL.offset| 0) (not (< |ULTIMATE.start_foo_~i~0#1| |ULTIMATE.start_foo_~size#1|)) (<= 0 |ULTIMATE.start_main_~c~0#1.base|) (<= |ULTIMATE.start_foo_~size#1| 32) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (= |ULTIMATE.start_foo_~i~0#1| |ULTIMATE.start_foo_#res#1|) (= |ULTIMATE.start_main_#t~post2#1| |ULTIMATE.start_main_~i~1#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_foo_~b#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-19 08:28:21,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:28:21,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:28:21,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2022-11-19 08:28:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375823128] [2022-11-19 08:28:21,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:28:21,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:28:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:28:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-19 08:28:21,325 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:21,599 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-11-19 08:28:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 08:28:21,599 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 08:28:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:21,600 INFO L225 Difference]: With dead ends: 70 [2022-11-19 08:28:21,600 INFO L226 Difference]: Without dead ends: 51 [2022-11-19 08:28:21,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2022-11-19 08:28:21,601 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:21,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 41 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:28:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-19 08:28:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-11-19 08:28:21,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2022-11-19 08:28:21,612 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 14 [2022-11-19 08:28:21,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:21,612 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2022-11-19 08:28:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2022-11-19 08:28:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 08:28:21,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:21,614 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:21,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:21,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 08:28:21,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash -971177926, now seen corresponding path program 1 times [2022-11-19 08:28:21,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:21,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110429494] [2022-11-19 08:28:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:21,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 08:28:21,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:21,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110429494] [2022-11-19 08:28:21,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110429494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:28:21,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369135743] [2022-11-19 08:28:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:21,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:21,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:21,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:28:21,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:28:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:22,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 08:28:22,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:28:22,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:28:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:28:22,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369135743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:28:22,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2135385733] [2022-11-19 08:28:22,250 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-19 08:28:22,250 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:28:22,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:28:22,251 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:28:22,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:28:22,275 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:28:22,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 08:28:22,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-19 08:28:22,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:22,375 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:22,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 217 [2022-11-19 08:28:22,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:22,530 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 [2022-11-19 08:28:22,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:22,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:22,671 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 [2022-11-19 08:28:22,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:22,766 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:22,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 119 [2022-11-19 08:28:22,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:22,885 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 [2022-11-19 08:28:23,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:23,072 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:23,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 119 [2022-11-19 08:28:23,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:23,194 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 [2022-11-19 08:28:23,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:23,238 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:28:24,271 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1079#(and (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (= 32 (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) (+ |ULTIMATE.start_main_~#b~0#1.offset| (* |ULTIMATE.start_main_~i~1#1| 4)))) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~#mask~0#1.offset| 0) (not (<= |ULTIMATE.start_main_#t~post4#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~#mask~0#1.base|) (= |#NULL.offset| 0) (< (mod |ULTIMATE.start_main_~i~1#1| 4294967296) 32) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#mask~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-19 08:28:24,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:28:24,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:28:24,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2022-11-19 08:28:24,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79887909] [2022-11-19 08:28:24,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:28:24,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 08:28:24,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 08:28:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2022-11-19 08:28:24,273 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:24,723 INFO L93 Difference]: Finished difference Result 129 states and 151 transitions. [2022-11-19 08:28:24,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 08:28:24,726 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 22 [2022-11-19 08:28:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:24,727 INFO L225 Difference]: With dead ends: 129 [2022-11-19 08:28:24,727 INFO L226 Difference]: Without dead ends: 91 [2022-11-19 08:28:24,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=425, Invalid=2025, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 08:28:24,729 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 101 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:24,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 36 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:28:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-19 08:28:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2022-11-19 08:28:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 86 states have (on average 1.0930232558139534) internal successors, (94), 88 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2022-11-19 08:28:24,746 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 22 [2022-11-19 08:28:24,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:24,746 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2022-11-19 08:28:24,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:24,747 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2022-11-19 08:28:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 08:28:24,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:24,748 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:24,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:24,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:24,954 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1133024161, now seen corresponding path program 1 times [2022-11-19 08:28:24,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:24,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139304456] [2022-11-19 08:28:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:24,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:28:25,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:25,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139304456] [2022-11-19 08:28:25,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139304456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:28:25,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300563987] [2022-11-19 08:28:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:25,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:25,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:25,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:28:25,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:28:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:25,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 08:28:25,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:28:25,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:28:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:28:26,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300563987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:28:26,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [421767771] [2022-11-19 08:28:26,469 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-19 08:28:26,470 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:28:26,470 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:28:26,470 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:28:26,470 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:28:26,494 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 08:28:26,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-19 08:28:26,519 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:28:26,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 08:28:26,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:26,615 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:26,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 217 [2022-11-19 08:28:26,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:26,795 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 [2022-11-19 08:28:26,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:26,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:26,937 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 [2022-11-19 08:28:26,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:27,032 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:27,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 119 [2022-11-19 08:28:27,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:27,145 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 [2022-11-19 08:28:27,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:27,323 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-19 08:28:27,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 119 [2022-11-19 08:28:27,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:27,431 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 [2022-11-19 08:28:27,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-19 08:28:27,466 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:28:28,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [421767771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:28,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:28:28,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17, 17, 17] total 55 [2022-11-19 08:28:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973203362] [2022-11-19 08:28:28,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:28,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 08:28:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 08:28:28,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=2413, Unknown=0, NotChecked=0, Total=2970 [2022-11-19 08:28:28,754 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:29,330 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2022-11-19 08:28:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 08:28:29,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-19 08:28:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:29,332 INFO L225 Difference]: With dead ends: 89 [2022-11-19 08:28:29,332 INFO L226 Difference]: Without dead ends: 88 [2022-11-19 08:28:29,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=574, Invalid=2732, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 08:28:29,334 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:29,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:28:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-19 08:28:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-19 08:28:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 86 states have (on average 1.0813953488372092) internal successors, (93), 87 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2022-11-19 08:28:29,349 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 35 [2022-11-19 08:28:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:29,350 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2022-11-19 08:28:29,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2022-11-19 08:28:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 08:28:29,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:29,351 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:29,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:29,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:29,557 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:29,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash -225120611, now seen corresponding path program 2 times [2022-11-19 08:28:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:29,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424533465] [2022-11-19 08:28:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 1 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 08:28:29,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:29,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424533465] [2022-11-19 08:28:29,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424533465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:28:29,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895848977] [2022-11-19 08:28:29,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:28:29,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:29,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:29,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:28:29,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:28:30,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:28:30,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:28:30,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:28:30,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-19 08:28:30,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:28:30,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895848977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:30,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:28:30,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-19 08:28:30,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710670288] [2022-11-19 08:28:30,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:30,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:28:30,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:28:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:28:30,087 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:30,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:30,154 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2022-11-19 08:28:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:28:30,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 38 [2022-11-19 08:28:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:30,156 INFO L225 Difference]: With dead ends: 88 [2022-11-19 08:28:30,156 INFO L226 Difference]: Without dead ends: 76 [2022-11-19 08:28:30,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-11-19 08:28:30,157 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:30,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:28:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-19 08:28:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-19 08:28:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-11-19 08:28:30,171 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 38 [2022-11-19 08:28:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:30,171 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-11-19 08:28:30,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-11-19 08:28:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 08:28:30,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:30,173 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 3, 3, 2, 2, 1, 1] [2022-11-19 08:28:30,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:30,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:30,379 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:28:30,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1278490428, now seen corresponding path program 2 times [2022-11-19 08:28:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:30,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574686031] [2022-11-19 08:28:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:30,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 326 proven. 70 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-19 08:28:30,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:30,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574686031] [2022-11-19 08:28:30,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574686031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:28:30,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283882407] [2022-11-19 08:28:30,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:28:30,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:30,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:30,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:28:30,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:28:30,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:28:30,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:28:30,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:28:30,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-19 08:28:31,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:28:31,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283882407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:31,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:28:31,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-19 08:28:31,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271900159] [2022-11-19 08:28:31,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:31,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:28:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:31,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:28:31,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:28:31,152 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2022-11-19 08:28:31,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:31,196 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2022-11-19 08:28:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:28:31,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) Word has length 75 [2022-11-19 08:28:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:31,198 INFO L225 Difference]: With dead ends: 76 [2022-11-19 08:28:31,199 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:28:31,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-11-19 08:28:31,201 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:31,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:28:31,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:28:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:28:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:28:31,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2022-11-19 08:28:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:31,203 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:28:31,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2022-11-19 08:28:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:28:31,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:28:31,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-19 08:28:31,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-19 08:28:31,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-19 08:28:31,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-19 08:28:31,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-19 08:28:31,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-19 08:28:31,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:31,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 08:28:31,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:28:32,166 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-19 08:28:32,167 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-11-19 08:28:32,167 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2022-11-19 08:28:32,167 INFO L895 garLoopResultBuilder]: At program point L15-5(lines 15 17) the Hoare annotation is: (and (<= |ULTIMATE.start_foo_#in~b#1.offset| 0) (= |ULTIMATE.start_main_~#mask~0#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~b#1.offset|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 32 |ULTIMATE.start_foo_~size#1|) (<= 0 |ULTIMATE.start_foo_#in~b#1.base|) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~b#1.base|) (<= 0 |ULTIMATE.start_foo_#in~b#1.offset|) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= 32 |ULTIMATE.start_foo_#in~size#1|) (<= 0 |ULTIMATE.start_main_~#mask~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.base|) (< (mod |ULTIMATE.start_main_~i~1#1| 4294967296) 32) (<= |ULTIMATE.start_foo_~size#1| 32) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_foo_~b#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~i~0#1|) (= |#NULL.base| 0)) [2022-11-19 08:28:32,168 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-19 08:28:32,168 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 08:28:32,168 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-11-19 08:28:32,168 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-19 08:28:32,168 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:28:32,168 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-11-19 08:28:32,169 INFO L899 garLoopResultBuilder]: For program point L29-3(line 29) no Hoare annotation was computed. [2022-11-19 08:28:32,169 INFO L899 garLoopResultBuilder]: For program point L29-4(line 29) no Hoare annotation was computed. [2022-11-19 08:28:32,169 INFO L895 garLoopResultBuilder]: At program point L29-5(lines 29 33) the Hoare annotation is: (and (<= |ULTIMATE.start_foo_#in~b#1.offset| 0) (= |ULTIMATE.start_main_~#mask~0#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~b#1.offset|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 32 |ULTIMATE.start_foo_~size#1|) (<= 0 |ULTIMATE.start_foo_#in~b#1.base|) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~b#1.base|) (<= 0 |ULTIMATE.start_foo_#in~b#1.offset|) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= 32 |ULTIMATE.start_foo_#in~size#1|) (<= 0 |ULTIMATE.start_main_~#mask~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.base|) (<= |ULTIMATE.start_foo_~size#1| 32) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_foo_~b#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~i~0#1|) (= |#NULL.base| 0)) [2022-11-19 08:28:32,169 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-11-19 08:28:32,169 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2022-11-19 08:28:32,170 INFO L895 garLoopResultBuilder]: At program point L25-5(lines 25 28) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#mask~0#1.offset| 0)) (.cse1 (= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse2 (= |#NULL.offset| 0)) (.cse3 (= |#NULL.base| 0))) (or (and (<= |ULTIMATE.start_foo_#in~b#1.offset| 0) .cse0 (<= 0 |ULTIMATE.start_foo_~b#1.offset|) .cse1 (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 32 |ULTIMATE.start_foo_~size#1|) (<= 0 |ULTIMATE.start_foo_#in~b#1.base|) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~b#1.base|) (<= 0 |ULTIMATE.start_foo_#in~b#1.offset|) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= 32 |ULTIMATE.start_foo_#in~size#1|) (<= 0 |ULTIMATE.start_main_~#mask~0#1.base|) .cse2 (<= 0 |ULTIMATE.start_main_~c~0#1.base|) (<= |ULTIMATE.start_foo_~size#1| 32) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_foo_~b#1.offset| 0) (<= 0 |ULTIMATE.start_foo_~i~0#1|) .cse3) (and .cse0 .cse1 (= |ULTIMATE.start_main_~i~1#1| 0) (= (select |#length| |ULTIMATE.start_main_~#mask~0#1.base|) 32) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#mask~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#b~0#1.base|) (= 400 (select |#length| |ULTIMATE.start_main_~#b~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~#mask~0#1.base|) 1) (= (select |#valid| |ULTIMATE.start_main_~#b~0#1.base|) 1) (= (select |#valid| 0) 0) .cse2 (< 0 |#StackHeapBarrier|) .cse3))) [2022-11-19 08:28:32,170 INFO L902 garLoopResultBuilder]: At program point L34(lines 21 35) the Hoare annotation is: true [2022-11-19 08:28:32,170 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-19 08:28:32,170 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2022-11-19 08:28:32,174 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:32,176 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:28:32,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:28:32 BoogieIcfgContainer [2022-11-19 08:28:32,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:28:32,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:28:32,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:28:32,197 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:28:32,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:13" (3/4) ... [2022-11-19 08:28:32,201 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:28:32,210 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-19 08:28:32,210 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-19 08:28:32,210 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 08:28:32,210 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:28:32,234 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((b <= 0 && mask == 0) && 0 <= b) && b == 0) && 0 <= i) && 32 <= size) && 0 <= b) && c <= 0) && 0 <= b) && 0 <= b) && 0 <= c) && i <= 2147483647) && 32 == \old(size)) && 0 <= mask) && #NULL == 0) && 0 <= c) && size <= 32) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && b <= 0) && 0 <= i) && #NULL == 0) || ((((((((((((mask == 0 && b == 0) && i == 0) && unknown-#length-unknown[mask] == 32) && unknown-#StackHeapBarrier-unknown < mask) && unknown-#StackHeapBarrier-unknown < b) && 400 == unknown-#length-unknown[b]) && \valid[mask] == 1) && \valid[b] == 1) && \valid[0] == 0) && #NULL == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2022-11-19 08:28:32,234 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((b <= 0 && mask == 0) && 0 <= b) && b == 0) && 0 <= i) && 32 <= size) && 0 <= b) && c <= 0) && 0 <= b) && 0 <= b) && 0 <= c) && i <= 2147483647) && 32 == \old(size)) && 0 <= mask) && #NULL == 0) && 0 <= c) && size <= 32) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && b <= 0) && 0 <= i) && #NULL == 0 [2022-11-19 08:28:32,235 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((b <= 0 && mask == 0) && 0 <= b) && b == 0) && 0 <= i) && 32 <= size) && 0 <= b) && c <= 0) && 0 <= b) && 0 <= b) && 0 <= c) && i <= 2147483647) && 32 == \old(size)) && 0 <= mask) && #NULL == 0) && 0 <= c) && i % 4294967296 < 32) && size <= 32) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && b <= 0) && 0 <= i) && #NULL == 0 [2022-11-19 08:28:32,243 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:28:32,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:28:32,244 INFO L158 Benchmark]: Toolchain (without parser) took 19674.58ms. Allocated memory was 125.8MB in the beginning and 325.1MB in the end (delta: 199.2MB). Free memory was 87.6MB in the beginning and 233.6MB in the end (delta: -145.9MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2022-11-19 08:28:32,244 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory was 104.3MB in the beginning and 104.2MB in the end (delta: 69.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:28:32,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.75ms. Allocated memory is still 125.8MB. Free memory was 87.4MB in the beginning and 101.2MB in the end (delta: -13.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:28:32,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.80ms. Allocated memory is still 125.8MB. Free memory was 101.2MB in the beginning and 99.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:28:32,245 INFO L158 Benchmark]: Boogie Preprocessor took 44.82ms. Allocated memory is still 125.8MB. Free memory was 99.4MB in the beginning and 98.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:28:32,246 INFO L158 Benchmark]: RCFGBuilder took 405.54ms. Allocated memory is still 125.8MB. Free memory was 98.2MB in the beginning and 85.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:28:32,246 INFO L158 Benchmark]: TraceAbstraction took 18837.95ms. Allocated memory was 125.8MB in the beginning and 325.1MB in the end (delta: 199.2MB). Free memory was 84.5MB in the beginning and 236.7MB in the end (delta: -152.2MB). Peak memory consumption was 180.2MB. Max. memory is 16.1GB. [2022-11-19 08:28:32,247 INFO L158 Benchmark]: Witness Printer took 46.86ms. Allocated memory is still 325.1MB. Free memory was 236.7MB in the beginning and 233.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:28:32,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory was 104.3MB in the beginning and 104.2MB in the end (delta: 69.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.75ms. Allocated memory is still 125.8MB. Free memory was 87.4MB in the beginning and 101.2MB in the end (delta: -13.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.80ms. Allocated memory is still 125.8MB. Free memory was 101.2MB in the beginning and 99.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.82ms. Allocated memory is still 125.8MB. Free memory was 99.4MB in the beginning and 98.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 405.54ms. Allocated memory is still 125.8MB. Free memory was 98.2MB in the beginning and 85.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18837.95ms. Allocated memory was 125.8MB in the beginning and 325.1MB in the end (delta: 199.2MB). Free memory was 84.5MB in the beginning and 236.7MB in the end (delta: -152.2MB). Peak memory consumption was 180.2MB. Max. memory is 16.1GB. * Witness Printer took 46.86ms. Allocated memory is still 325.1MB. Free memory was 236.7MB in the beginning and 233.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: 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, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 18.7s, OverallIterations: 11, TraceHistogramMax: 21, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 274 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 524 IncrementalHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 83 mSDtfsCounter, 524 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 503 GetRequests, 271 SyntacticMatches, 18 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2751 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=8, InterpolantAutomatonStates: 101, 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, 11 MinimizatonAttempts, 35 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 35 NumberOfFragments, 258 HoareAnnotationTreeSize, 4 FomulaSimplifications, 123 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 2234 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 430 NumberOfCodeBlocks, 341 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 499 ConstructedInterpolants, 0 QuantifiedInterpolants, 1603 SizeOfPredicates, 28 NumberOfNonLiveVariables, 790 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 1514/1911 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 3.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 130, TOOLS_POST_TIME: 2.5s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 130, TOOLS_QUANTIFIERELIM_TIME: 2.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 237, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 21, DOMAIN_WIDEN_TIME: 0.3s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 33, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 12, LOOP_SUMMARIZER_CACHE_MISSES: 12, LOOP_SUMMARIZER_OVERALL_TIME: 2.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 33, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 189, DAG_COMPRESSION_RETAINED_NODES: 96, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((((((((((((((((((((b <= 0 && mask == 0) && 0 <= b) && b == 0) && 0 <= i) && 32 <= size) && 0 <= b) && c <= 0) && 0 <= b) && 0 <= b) && 0 <= c) && i <= 2147483647) && 32 == \old(size)) && 0 <= mask) && #NULL == 0) && 0 <= c) && i % 4294967296 < 32) && size <= 32) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && b <= 0) && 0 <= i) && #NULL == 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((((((((((((((((b <= 0 && mask == 0) && 0 <= b) && b == 0) && 0 <= i) && 32 <= size) && 0 <= b) && c <= 0) && 0 <= b) && 0 <= b) && 0 <= c) && i <= 2147483647) && 32 == \old(size)) && 0 <= mask) && #NULL == 0) && 0 <= c) && size <= 32) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && b <= 0) && 0 <= i) && #NULL == 0) || ((((((((((((mask == 0 && b == 0) && i == 0) && unknown-#length-unknown[mask] == 32) && unknown-#StackHeapBarrier-unknown < mask) && unknown-#StackHeapBarrier-unknown < b) && 400 == unknown-#length-unknown[b]) && \valid[mask] == 1) && \valid[b] == 1) && \valid[0] == 0) && #NULL == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((((((((((((((((b <= 0 && mask == 0) && 0 <= b) && b == 0) && 0 <= i) && 32 <= size) && 0 <= b) && c <= 0) && 0 <= b) && 0 <= b) && 0 <= c) && i <= 2147483647) && 32 == \old(size)) && 0 <= mask) && #NULL == 0) && 0 <= c) && size <= 32) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && b <= 0) && 0 <= i) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 08:28:32,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1068e19-ad28-41a0-a44b-cf9212a93514/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE