./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/PastaA1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/PastaA1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba --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 64bit --witnessprinter.graph.data.programhash ab6c18b18e668cddc67355c8fe64fffbf634b674076a13c061b751962efeb393 --- 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-b5237d8 [2022-11-22 02:11:50,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:11:50,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:11:50,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:11:50,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:11:50,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:11:50,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:11:50,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:11:50,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:11:50,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:11:50,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:11:50,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:11:50,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:11:50,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:11:50,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:11:50,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:11:50,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:11:50,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:11:50,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:11:50,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:11:50,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:11:50,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:11:50,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:11:50,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:11:50,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:11:50,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:11:50,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:11:50,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:11:50,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:11:50,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:11:50,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:11:50,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:11:50,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:11:50,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:11:50,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:11:50,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:11:50,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:11:50,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:11:50,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:11:50,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:11:50,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:11:50,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 02:11:50,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:11:50,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:11:50,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:11:50,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:11:50,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:11:50,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:11:50,317 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:11:50,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:11:50,318 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:11:50,318 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:11:50,318 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:11:50,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:11:50,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:11:50,319 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:11:50,319 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:11:50,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:11:50,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:11:50,321 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:11:50,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:11:50,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:11:50,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:11:50,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:11:50,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:11:50,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:11:50,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:11:50,324 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:11:50,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:11:50,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:11:50,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:11:50,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:11:50,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:11:50,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:50,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:11:50,327 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:11:50,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:11:50,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:11:50,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:11:50,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:11:50,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:11:50,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:11:50,329 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_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab6c18b18e668cddc67355c8fe64fffbf634b674076a13c061b751962efeb393 [2022-11-22 02:11:50,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:11:50,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:11:50,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:11:50,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:11:50,683 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:11:50,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-restricted-15/PastaA1.c [2022-11-22 02:11:53,983 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:11:54,284 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:11:54,285 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/sv-benchmarks/c/termination-restricted-15/PastaA1.c [2022-11-22 02:11:54,292 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/data/279d44153/615a9fd4d07043978761a5f02a56311c/FLAGd4e1b0e15 [2022-11-22 02:11:54,317 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/data/279d44153/615a9fd4d07043978761a5f02a56311c [2022-11-22 02:11:54,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:11:54,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:11:54,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:54,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:11:54,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:11:54,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcfd9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54, skipping insertion in model container [2022-11-22 02:11:54,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:11:54,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:11:54,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:54,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:11:54,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:54,639 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:11:54,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54 WrapperNode [2022-11-22 02:11:54,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:54,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:54,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:11:54,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:11:54,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,670 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-11-22 02:11:54,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:54,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:11:54,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:11:54,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:11:54,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:11:54,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:11:54,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:11:54,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:11:54,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (1/1) ... [2022-11-22 02:11:54,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:54,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:54,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:11:54,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:11:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:11:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:11:54,871 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:11:54,872 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:11:54,960 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:11:54,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:11:54,988 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:11:54,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:54 BoogieIcfgContainer [2022-11-22 02:11:54,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:11:54,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:11:54,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:11:55,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:11:55,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:11:54" (1/3) ... [2022-11-22 02:11:55,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bad9869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:55, skipping insertion in model container [2022-11-22 02:11:55,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:54" (2/3) ... [2022-11-22 02:11:55,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bad9869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:55, skipping insertion in model container [2022-11-22 02:11:55,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:54" (3/3) ... [2022-11-22 02:11:55,014 INFO L112 eAbstractionObserver]: Analyzing ICFG PastaA1.c [2022-11-22 02:11:55,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:11:55,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-22 02:11:55,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:11:55,084 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;@53d9f133, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:11:55,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-22 02:11:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:11:55,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:55,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:11:55,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:11:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2126373, now seen corresponding path program 1 times [2022-11-22 02:11:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:55,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172682057] [2022-11-22 02:11:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:55,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:55,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:55,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172682057] [2022-11-22 02:11:55,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172682057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:55,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:55,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:11:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461574391] [2022-11-22 02:11:55,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:55,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:55,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:55,321 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) 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) [2022-11-22 02:11:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:55,392 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-22 02:11:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:55,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2022-11-22 02:11:55,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:55,419 INFO L225 Difference]: With dead ends: 22 [2022-11-22 02:11:55,419 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 02:11:55,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:55,428 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:55,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:11:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 02:11:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-11-22 02:11:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-11-22 02:11:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-22 02:11:55,485 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 4 [2022-11-22 02:11:55,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:55,486 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-22 02:11:55,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2022-11-22 02:11:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-22 02:11:55,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:11:55,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:55,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:11:55,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:11:55,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:11:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:55,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2127062, now seen corresponding path program 1 times [2022-11-22 02:11:55,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:55,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113629993] [2022-11-22 02:11:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:55,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:55,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:55,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113629993] [2022-11-22 02:11:55,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113629993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:55,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:55,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:11:55,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995618925] [2022-11-22 02:11:55,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:55,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:55,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:55,554 INFO L87 Difference]: Start difference. First operand 13 states and 15 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) [2022-11-22 02:11:55,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:55,617 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-11-22 02:11:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:55,620 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 [2022-11-22 02:11:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:55,620 INFO L225 Difference]: With dead ends: 25 [2022-11-22 02:11:55,621 INFO L226 Difference]: Without dead ends: 13 [2022-11-22 02:11:55,622 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 [2022-11-22 02:11:55,624 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:55,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:11:55,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-22 02:11:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-22 02:11:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-22 02:11:55,641 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2022-11-22 02:11:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:55,642 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-22 02:11:55,642 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) [2022-11-22 02:11:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-22 02:11:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:11:55,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:55,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:11:55,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:11:55,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:11:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash 65917617, now seen corresponding path program 1 times [2022-11-22 02:11:55,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:55,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654789864] [2022-11-22 02:11:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:55,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:55,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654789864] [2022-11-22 02:11:55,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654789864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:55,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:55,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:11:55,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977583614] [2022-11-22 02:11:55,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:55,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:55,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:55,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:55,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:55,691 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:55,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:55,706 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-22 02:11:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:55,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:11:55,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:55,708 INFO L225 Difference]: With dead ends: 14 [2022-11-22 02:11:55,708 INFO L226 Difference]: Without dead ends: 13 [2022-11-22 02:11:55,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:55,710 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:55,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:11:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-22 02:11:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-11-22 02:11:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:55,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-22 02:11:55,715 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2022-11-22 02:11:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:55,715 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-22 02:11:55,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-22 02:11:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:11:55,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:55,716 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-22 02:11:55,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:11:55,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:11:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:55,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1077677901, now seen corresponding path program 1 times [2022-11-22 02:11:55,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:55,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330837889] [2022-11-22 02:11:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:55,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:55,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:55,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330837889] [2022-11-22 02:11:55,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330837889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:11:55,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296069287] [2022-11-22 02:11:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:55,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:11:55,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:55,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:11:55,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:11:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:55,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:11:55,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:55,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:11:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:56,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296069287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:11:56,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [352392660] [2022-11-22 02:11:56,061 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 02:11:56,061 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:11:56,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:11:56,077 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:11:56,078 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:11:56,362 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:11:56,511 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '188#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2022-11-22 02:11:56,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:11:56,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:11:56,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 02:11:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693708752] [2022-11-22 02:11:56,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:11:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:11:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:11:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:11:56,515 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:56,562 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-11-22 02:11:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:11:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:11:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:56,564 INFO L225 Difference]: With dead ends: 37 [2022-11-22 02:11:56,565 INFO L226 Difference]: Without dead ends: 36 [2022-11-22 02:11:56,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:11:56,567 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:56,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 23 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:11:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-22 02:11:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 21. [2022-11-22 02:11:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 20 states have internal predecessors, (25), 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) [2022-11-22 02:11:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-22 02:11:56,574 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2022-11-22 02:11:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:56,575 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-22 02:11:56,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-22 02:11:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:11:56,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:56,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:56,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:11:56,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:11:56,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:11:56,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1077677212, now seen corresponding path program 1 times [2022-11-22 02:11:56,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:56,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852443078] [2022-11-22 02:11:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:11:56,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:56,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852443078] [2022-11-22 02:11:56,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852443078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:56,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:56,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:11:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125869867] [2022-11-22 02:11:56,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:56,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:56,826 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-22 02:11:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:56,841 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-11-22 02:11:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:56,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-11-22 02:11:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:56,843 INFO L225 Difference]: With dead ends: 21 [2022-11-22 02:11:56,844 INFO L226 Difference]: Without dead ends: 20 [2022-11-22 02:11:56,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:56,846 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:56,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:11:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-22 02:11:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-22 02:11:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-22 02:11:56,853 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 7 [2022-11-22 02:11:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:56,853 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-22 02:11:56,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-22 02:11:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-22 02:11:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:11:56,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:56,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:56,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:11:56,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:11:56,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash 951744857, now seen corresponding path program 1 times [2022-11-22 02:11:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:56,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125309814] [2022-11-22 02:11:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:11:56,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:56,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125309814] [2022-11-22 02:11:56,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125309814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:56,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:56,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:11:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076252890] [2022-11-22 02:11:56,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:56,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:56,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:56,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:56,902 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:56,915 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-11-22 02:11:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:11:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:56,917 INFO L225 Difference]: With dead ends: 20 [2022-11-22 02:11:56,917 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 02:11:56,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:56,919 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:56,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:11:56,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 02:11:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-22 02:11:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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) [2022-11-22 02:11:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-22 02:11:56,926 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 8 [2022-11-22 02:11:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:56,926 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-22 02:11:56,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-22 02:11:56,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 02:11:56,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:56,928 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2022-11-22 02:11:56,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:11:56,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:11:56,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1557062491, now seen corresponding path program 2 times [2022-11-22 02:11:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:56,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481362096] [2022-11-22 02:11:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:11:57,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:57,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481362096] [2022-11-22 02:11:57,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481362096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:11:57,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154769676] [2022-11-22 02:11:57,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:11:57,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:11:57,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:57,008 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:11:57,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:11:57,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 02:11:57,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:11:57,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:11:57,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:11:57,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:11:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 02:11:57,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154769676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:11:57,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [872381067] [2022-11-22 02:11:57,186 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 02:11:57,187 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:11:57,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:11:57,188 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:11:57,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:11:57,303 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:11:57,425 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '470#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2022-11-22 02:11:57,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:11:57,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:11:57,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-11-22 02:11:57,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074114349] [2022-11-22 02:11:57,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:11:57,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:11:57,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:57,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:11:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:11:57,432 INFO L87 Difference]: Start difference. First operand 19 states and 23 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) [2022-11-22 02:11:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:57,470 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-11-22 02:11:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:11:57,471 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 16 [2022-11-22 02:11:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:57,472 INFO L225 Difference]: With dead ends: 19 [2022-11-22 02:11:57,473 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:11:57,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:11:57,478 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:57,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:11:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:11:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:11:57,484 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) [2022-11-22 02:11:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:11:57,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-22 02:11:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:57,485 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:11:57,485 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) [2022-11-22 02:11:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:11:57,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:11:57,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-22 02:11:57,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-22 02:11:57,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-22 02:11:57,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-22 02:11:57,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:11:57,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:11:57,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:11:57,742 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-22 02:11:57,742 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:11:57,742 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-22 02:11:57,742 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-11-22 02:11:57,742 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-11-22 02:11:57,742 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-22 02:11:57,743 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-22 02:11:57,743 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-22 02:11:57,743 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:11:57,743 INFO L895 garLoopResultBuilder]: At program point L12-2(lines 12 14) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|)) [2022-11-22 02:11:57,744 INFO L899 garLoopResultBuilder]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2022-11-22 02:11:57,744 INFO L895 garLoopResultBuilder]: At program point L10-2(lines 10 16) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2022-11-22 02:11:57,748 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-22 02:11:57,750 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:11:57,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:11:57 BoogieIcfgContainer [2022-11-22 02:11:57,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:11:57,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:11:57,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:11:57,768 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:11:57,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:54" (3/4) ... [2022-11-22 02:11:57,772 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:11:57,784 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-22 02:11:57,784 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-22 02:11:57,785 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:11:57,829 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:11:57,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:11:57,830 INFO L158 Benchmark]: Toolchain (without parser) took 3501.88ms. Allocated memory was 169.9MB in the beginning and 211.8MB in the end (delta: 41.9MB). Free memory was 135.5MB in the beginning and 125.2MB in the end (delta: 10.4MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2022-11-22 02:11:57,830 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 169.9MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:11:57,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.36ms. Allocated memory is still 169.9MB. Free memory was 134.9MB in the beginning and 126.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 02:11:57,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.47ms. Allocated memory is still 169.9MB. Free memory was 126.0MB in the beginning and 125.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:11:57,831 INFO L158 Benchmark]: Boogie Preprocessor took 23.14ms. Allocated memory is still 169.9MB. Free memory was 125.0MB in the beginning and 123.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:11:57,832 INFO L158 Benchmark]: RCFGBuilder took 294.86ms. Allocated memory is still 169.9MB. Free memory was 123.9MB in the beginning and 114.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 02:11:57,832 INFO L158 Benchmark]: TraceAbstraction took 2768.18ms. Allocated memory was 169.9MB in the beginning and 211.8MB in the end (delta: 41.9MB). Free memory was 113.4MB in the beginning and 127.3MB in the end (delta: -13.9MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-11-22 02:11:57,833 INFO L158 Benchmark]: Witness Printer took 61.50ms. Allocated memory is still 211.8MB. Free memory was 127.3MB in the beginning and 125.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:11:57,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 169.9MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.36ms. Allocated memory is still 169.9MB. Free memory was 134.9MB in the beginning and 126.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.47ms. Allocated memory is still 169.9MB. Free memory was 126.0MB in the beginning and 125.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.14ms. Allocated memory is still 169.9MB. Free memory was 125.0MB in the beginning and 123.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 294.86ms. Allocated memory is still 169.9MB. Free memory was 123.9MB in the beginning and 114.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2768.18ms. Allocated memory was 169.9MB in the beginning and 211.8MB in the end (delta: 41.9MB). Free memory was 113.4MB in the beginning and 127.3MB in the end (delta: -13.9MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * Witness Printer took 61.50ms. Allocated memory is still 211.8MB. Free memory was 127.3MB in the beginning and 125.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: 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: 15]: 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, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 32 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 58 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 74 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 244 SizeOfPredicates, 2 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 68/86 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (x <= 2147483647 && 0 <= y) && 1 <= x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2022-11-22 02:11:57,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ded383-1af9-44e5-9ac9-83ca933fed06/bin/utaipan-g80aRyZoba/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