./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW --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 45cf92b0c6fea336569aa3c590b09eca22523fff4b1b234a5534ea2e1e74fe84 --- 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-4e7fbc6 [2022-11-23 16:04:13,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:04:13,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:04:13,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:04:13,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:04:13,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:04:13,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:04:13,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:04:13,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:04:13,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:04:13,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:04:13,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:04:13,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:04:13,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:04:13,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:04:13,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:04:13,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:04:13,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:04:13,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:04:13,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:04:13,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:04:13,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:04:13,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:04:13,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:04:13,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:04:13,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:04:13,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:04:13,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:04:13,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:04:13,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:04:13,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:04:13,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:04:13,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:04:13,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:04:13,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:04:13,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:04:13,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:04:13,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:04:13,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:04:13,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:04:13,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:04:13,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 16:04:13,332 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:04:13,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:04:13,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:04:13,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:04:13,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:04:13,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:04:13,334 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:04:13,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:04:13,335 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:04:13,335 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:04:13,336 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:04:13,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:04:13,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:04:13,337 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:04:13,337 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:04:13,337 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:04:13,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:04:13,338 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:04:13,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:04:13,339 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 16:04:13,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:04:13,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:04:13,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:04:13,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:04:13,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:04:13,341 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 16:04:13,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:04:13,341 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:04:13,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:04:13,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:04:13,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:04:13,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:04:13,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:04:13,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:04:13,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:04:13,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:04:13,344 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:04:13,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:04:13,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:04:13,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:04:13,345 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_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45cf92b0c6fea336569aa3c590b09eca22523fff4b1b234a5534ea2e1e74fe84 [2022-11-23 16:04:13,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:04:13,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:04:13,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:04:13,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:04:13,645 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:04:13,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple4.c [2022-11-23 16:04:17,000 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:04:17,211 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:04:17,211 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/sv-benchmarks/c/termination-crafted/NonTerminationSimple4.c [2022-11-23 16:04:17,218 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/data/0ede4bdae/6dd420727fae403183e3a2f474b65e5e/FLAG4d42eaca5 [2022-11-23 16:04:17,237 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/data/0ede4bdae/6dd420727fae403183e3a2f474b65e5e [2022-11-23 16:04:17,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:04:17,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:04:17,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:04:17,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:04:17,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:04:17,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76251a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17, skipping insertion in model container [2022-11-23 16:04:17,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:04:17,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:04:17,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:04:17,460 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:04:17,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:04:17,493 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:04:17,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17 WrapperNode [2022-11-23 16:04:17,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:04:17,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:04:17,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:04:17,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:04:17,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,531 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-23 16:04:17,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:04:17,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:04:17,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:04:17,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:04:17,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,557 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:04:17,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:04:17,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:04:17,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:04:17,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (1/1) ... [2022-11-23 16:04:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:04:17,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:17,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:04:17,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:04:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:04:17,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:04:17,744 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:04:17,747 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:04:17,889 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:04:17,923 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:04:17,923 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:04:17,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:17 BoogieIcfgContainer [2022-11-23 16:04:17,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:04:17,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:04:17,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:04:17,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:04:17,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:04:17" (1/3) ... [2022-11-23 16:04:17,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18adca21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:17, skipping insertion in model container [2022-11-23 16:04:17,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:17" (2/3) ... [2022-11-23 16:04:17,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18adca21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:17, skipping insertion in model container [2022-11-23 16:04:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:17" (3/3) ... [2022-11-23 16:04:17,954 INFO L112 eAbstractionObserver]: Analyzing ICFG NonTerminationSimple4.c [2022-11-23 16:04:17,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:04:17,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 16:04:18,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:04:18,071 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;@5c67238e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:04:18,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 16:04:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-11-23 16:04:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 16:04:18,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:18,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 16:04:18,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:18,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1822505, now seen corresponding path program 1 times [2022-11-23 16:04:18,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:18,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590067444] [2022-11-23 16:04:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:18,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:18,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:18,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590067444] [2022-11-23 16:04:18,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590067444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:18,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:18,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:04:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111453084] [2022-11-23 16:04:18,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:18,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:18,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:18,382 INFO L87 Difference]: Start difference. First operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-11-23 16:04:18,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:18,435 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-11-23 16:04:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:18,439 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 [2022-11-23 16:04:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:18,449 INFO L225 Difference]: With dead ends: 15 [2022-11-23 16:04:18,449 INFO L226 Difference]: Without dead ends: 10 [2022-11-23 16:04:18,452 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 [2022-11-23 16:04:18,457 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 1 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 [2022-11-23 16:04:18,458 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] [2022-11-23 16:04:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-23 16:04:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-11-23 16:04:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:04:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 16:04:18,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2022-11-23 16:04:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:18,498 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 16:04:18,498 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) [2022-11-23 16:04:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 16:04:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:04:18,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:18,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:04:18,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:04:18,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash 56497703, now seen corresponding path program 1 times [2022-11-23 16:04:18,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:18,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46626989] [2022-11-23 16:04:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:18,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:18,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:18,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46626989] [2022-11-23 16:04:18,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46626989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:18,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:18,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:04:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828729731] [2022-11-23 16:04:18,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:18,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:18,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:18,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:18,548 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:04:18,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:18,561 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-11-23 16:04:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:18,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 16:04:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:18,563 INFO L225 Difference]: With dead ends: 9 [2022-11-23 16:04:18,563 INFO L226 Difference]: Without dead ends: 8 [2022-11-23 16:04:18,564 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 [2022-11-23 16:04:18,566 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:18,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:04:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-23 16:04:18,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-23 16:04:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-23 16:04:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-23 16:04:18,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2022-11-23 16:04:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:18,572 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-23 16:04:18,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:04:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-23 16:04:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 16:04:18,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:18,574 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-23 16:04:18,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:04:18,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:18,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1540280855, now seen corresponding path program 1 times [2022-11-23 16:04:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:18,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442581867] [2022-11-23 16:04:18,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:18,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:18,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:18,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442581867] [2022-11-23 16:04:18,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442581867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:18,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512452617] [2022-11-23 16:04:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:18,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:18,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:18,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:18,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:04:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:18,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:04:18,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:18,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:18,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512452617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:18,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1600596175] [2022-11-23 16:04:18,981 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 16:04:18,986 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:18,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:19,004 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:19,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:19,201 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:19,324 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '111#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-23 16:04:19,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:04:19,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:04:19,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-23 16:04:19,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821296579] [2022-11-23 16:04:19,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:04:19,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:04:19,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:04:19,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:04:19,327 INFO L87 Difference]: Start difference. First operand 8 states and 8 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) [2022-11-23 16:04:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:19,358 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-11-23 16:04:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:04:19,359 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 [2022-11-23 16:04:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:19,360 INFO L225 Difference]: With dead ends: 18 [2022-11-23 16:04:19,360 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 16:04:19,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:04:19,362 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:19,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:04:19,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 16:04:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-23 16:04:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:04:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-23 16:04:19,368 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-11-23 16:04:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:19,369 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-23 16:04:19,369 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) [2022-11-23 16:04:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-23 16:04:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 16:04:19,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:19,370 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2022-11-23 16:04:19,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:04:19,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:19,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1073405737, now seen corresponding path program 2 times [2022-11-23 16:04:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:19,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386215324] [2022-11-23 16:04:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:19,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:19,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:19,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386215324] [2022-11-23 16:04:19,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386215324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:19,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422042687] [2022-11-23 16:04:19,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:04:19,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:19,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:19,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:19,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:04:19,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:04:19,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:04:19,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 16:04:19,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:19,952 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:19,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:20,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422042687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:20,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [763079227] [2022-11-23 16:04:20,096 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 16:04:20,096 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:20,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:20,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:20,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:20,175 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:20,287 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '263#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-23 16:04:20,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:04:20,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:04:20,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-23 16:04:20,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344658558] [2022-11-23 16:04:20,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:04:20,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 16:04:20,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 16:04:20,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-23 16:04:20,291 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2022-11-23 16:04:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:20,349 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-11-23 16:04:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 16:04:20,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 [2022-11-23 16:04:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:20,350 INFO L225 Difference]: With dead ends: 36 [2022-11-23 16:04:20,351 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 16:04:20,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-23 16:04:20,352 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:20,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:04:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 16:04:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-23 16:04:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 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) [2022-11-23 16:04:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-11-23 16:04:20,360 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 16 [2022-11-23 16:04:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:20,361 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-11-23 16:04:20,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2022-11-23 16:04:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-11-23 16:04:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 16:04:20,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:20,363 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2022-11-23 16:04:20,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:04:20,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:20,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2086897879, now seen corresponding path program 3 times [2022-11-23 16:04:20,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:20,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963901739] [2022-11-23 16:04:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:20,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:20,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:20,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963901739] [2022-11-23 16:04:20,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963901739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:20,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270087571] [2022-11-23 16:04:20,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:04:20,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:20,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:20,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:20,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:04:20,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:04:20,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:04:20,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 16:04:20,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:21,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:21,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270087571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:21,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [135025101] [2022-11-23 16:04:21,506 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 16:04:21,506 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:21,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:21,507 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:21,507 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:21,565 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:21,714 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '583#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-23 16:04:21,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:04:21,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:04:21,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-23 16:04:21,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602294236] [2022-11-23 16:04:21,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:04:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 16:04:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 16:04:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2022-11-23 16:04:21,720 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 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) [2022-11-23 16:04:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:21,869 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2022-11-23 16:04:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 16:04:21,870 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 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 34 [2022-11-23 16:04:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:21,877 INFO L225 Difference]: With dead ends: 72 [2022-11-23 16:04:21,877 INFO L226 Difference]: Without dead ends: 71 [2022-11-23 16:04:21,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2022-11-23 16:04:21,883 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:21,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 25 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:04:21,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-23 16:04:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-23 16:04:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 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) [2022-11-23 16:04:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2022-11-23 16:04:21,920 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 34 [2022-11-23 16:04:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:21,921 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2022-11-23 16:04:21,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 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) [2022-11-23 16:04:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2022-11-23 16:04:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 16:04:21,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:21,928 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1] [2022-11-23 16:04:21,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 16:04:22,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:22,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash 398305065, now seen corresponding path program 4 times [2022-11-23 16:04:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:22,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948948280] [2022-11-23 16:04:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:22,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:22,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948948280] [2022-11-23 16:04:22,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948948280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:22,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519371388] [2022-11-23 16:04:22,982 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:04:22,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:22,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:22,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:23,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:04:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:23,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 16:04:23,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:23,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:24,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519371388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1363339572] [2022-11-23 16:04:24,391 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 16:04:24,391 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:24,391 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:24,392 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:24,392 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:24,435 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:24,600 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1239#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-23 16:04:24,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:04:24,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:04:24,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-23 16:04:24,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776176976] [2022-11-23 16:04:24,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:04:24,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 16:04:24,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 16:04:24,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1144, Invalid=1612, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 16:04:24,622 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 48 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 48 states have internal predecessors, (139), 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) [2022-11-23 16:04:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:24,882 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2022-11-23 16:04:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 16:04:24,883 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 48 states have internal predecessors, (139), 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 70 [2022-11-23 16:04:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:24,889 INFO L225 Difference]: With dead ends: 144 [2022-11-23 16:04:24,892 INFO L226 Difference]: Without dead ends: 143 [2022-11-23 16:04:24,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1144, Invalid=1612, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 16:04:24,897 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:24,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 49 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:04:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-23 16:04:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-11-23 16:04:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 states have internal predecessors, (143), 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) [2022-11-23 16:04:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2022-11-23 16:04:24,934 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 70 [2022-11-23 16:04:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:24,941 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2022-11-23 16:04:24,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 48 states have internal predecessors, (139), 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) [2022-11-23 16:04:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2022-11-23 16:04:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-23 16:04:24,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:24,949 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1] [2022-11-23 16:04:24,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:04:25,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:25,150 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash -42465495, now seen corresponding path program 5 times [2022-11-23 16:04:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:25,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422230887] [2022-11-23 16:04:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:25,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:27,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:27,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422230887] [2022-11-23 16:04:27,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422230887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:27,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918331475] [2022-11-23 16:04:27,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:04:27,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:27,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:27,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:27,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:04:27,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-23 16:04:27,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:04:27,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 16:04:27,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:28,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:32,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918331475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:32,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1823787121] [2022-11-23 16:04:32,178 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 16:04:32,178 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:32,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:32,178 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:32,179 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:32,224 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:32,464 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2567#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-23 16:04:32,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:04:32,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:04:32,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-23 16:04:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509112791] [2022-11-23 16:04:32,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:04:32,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-23 16:04:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-23 16:04:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4576, Invalid=5524, Unknown=0, NotChecked=0, Total=10100 [2022-11-23 16:04:32,474 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand has 96 states, 95 states have (on average 2.9789473684210526) internal successors, (283), 96 states have internal predecessors, (283), 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) [2022-11-23 16:04:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:33,149 INFO L93 Difference]: Finished difference Result 288 states and 335 transitions. [2022-11-23 16:04:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-23 16:04:33,150 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.9789473684210526) internal successors, (283), 96 states have internal predecessors, (283), 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 142 [2022-11-23 16:04:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:33,153 INFO L225 Difference]: With dead ends: 288 [2022-11-23 16:04:33,154 INFO L226 Difference]: Without dead ends: 287 [2022-11-23 16:04:33,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4576, Invalid=5524, Unknown=0, NotChecked=0, Total=10100 [2022-11-23 16:04:33,159 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 141 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:33,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 97 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:04:33,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-23 16:04:33,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-23 16:04:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.0034965034965035) internal successors, (287), 286 states have internal predecessors, (287), 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) [2022-11-23 16:04:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2022-11-23 16:04:33,212 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 142 [2022-11-23 16:04:33,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:33,213 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2022-11-23 16:04:33,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.9789473684210526) internal successors, (283), 96 states have internal predecessors, (283), 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) [2022-11-23 16:04:33,214 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2022-11-23 16:04:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-23 16:04:33,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:33,229 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 1, 1, 1] [2022-11-23 16:04:33,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 16:04:33,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:33,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash 248301353, now seen corresponding path program 6 times [2022-11-23 16:04:33,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:33,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867940967] [2022-11-23 16:04:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:33,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:42,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:42,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867940967] [2022-11-23 16:04:42,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867940967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:42,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913454856] [2022-11-23 16:04:42,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:04:42,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:42,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:42,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:42,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 16:04:42,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:04:42,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:04:42,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-23 16:04:42,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:43,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:56,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913454856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:56,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1398737978] [2022-11-23 16:04:56,424 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 16:04:56,424 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:56,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:56,425 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:56,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:56,479 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:56,896 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5239#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-23 16:04:56,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:04:56,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:04:56,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-23 16:04:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372488941] [2022-11-23 16:04:56,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:04:56,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-23 16:04:56,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-23 16:04:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18352, Invalid=20260, Unknown=0, NotChecked=0, Total=38612 [2022-11-23 16:04:56,921 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand has 192 states, 191 states have (on average 2.9895287958115184) internal successors, (571), 192 states have internal predecessors, (571), 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) [2022-11-23 16:04:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:59,039 INFO L93 Difference]: Finished difference Result 576 states and 671 transitions. [2022-11-23 16:04:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-23 16:04:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 2.9895287958115184) internal successors, (571), 192 states have internal predecessors, (571), 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 286 [2022-11-23 16:04:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:59,043 INFO L225 Difference]: With dead ends: 576 [2022-11-23 16:04:59,043 INFO L226 Difference]: Without dead ends: 575 [2022-11-23 16:04:59,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=18352, Invalid=20260, Unknown=0, NotChecked=0, Total=38612 [2022-11-23 16:04:59,048 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 285 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:59,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 193 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 16:04:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-23 16:04:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2022-11-23 16:04:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.0017421602787457) internal successors, (575), 574 states have internal predecessors, (575), 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) [2022-11-23 16:04:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 575 transitions. [2022-11-23 16:04:59,076 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 575 transitions. Word has length 286 [2022-11-23 16:04:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:59,077 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 575 transitions. [2022-11-23 16:04:59,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 2.9895287958115184) internal successors, (571), 192 states have internal predecessors, (571), 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) [2022-11-23 16:04:59,078 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 575 transitions. [2022-11-23 16:04:59,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-11-23 16:04:59,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:59,091 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 1, 1, 1] [2022-11-23 16:04:59,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 16:04:59,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 16:04:59,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:04:59,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -923384023, now seen corresponding path program 7 times [2022-11-23 16:04:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:59,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762800043] [2022-11-23 16:04:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 54245 backedges. 0 proven. 54245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:05:28,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:28,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762800043] [2022-11-23 16:05:28,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762800043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:28,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017303362] [2022-11-23 16:05:28,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:05:28,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:28,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:28,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:28,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 16:05:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:28,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-23 16:05:28,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 54245 backedges. 0 proven. 54245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:05:29,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:06:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 54245 backedges. 0 proven. 54245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:06:22,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017303362] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:06:22,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225671665] [2022-11-23 16:06:22,317 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 16:06:22,317 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:06:22,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:06:22,318 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:06:22,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:06:22,344 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:06:23,124 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10599#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-23 16:06:23,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:06:23,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:06:23,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-11-23 16:06:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73218076] [2022-11-23 16:06:23,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:06:23,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-23 16:06:23,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-23 16:06:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73552, Invalid=77380, Unknown=0, NotChecked=0, Total=150932 [2022-11-23 16:06:23,166 INFO L87 Difference]: Start difference. First operand 575 states and 575 transitions. Second operand has 384 states, 383 states have (on average 2.9947780678851177) internal successors, (1147), 384 states have internal predecessors, (1147), 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) [2022-11-23 16:06:31,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:31,010 INFO L93 Difference]: Finished difference Result 1152 states and 1343 transitions. [2022-11-23 16:06:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-23 16:06:31,012 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 2.9947780678851177) internal successors, (1147), 384 states have internal predecessors, (1147), 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 574 [2022-11-23 16:06:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:31,018 INFO L225 Difference]: With dead ends: 1152 [2022-11-23 16:06:31,019 INFO L226 Difference]: Without dead ends: 1151 [2022-11-23 16:06:31,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1912 GetRequests, 1525 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2856 ImplicationChecksByTransitivity, 69.8s TimeCoverageRelationStatistics Valid=73552, Invalid=77380, Unknown=0, NotChecked=0, Total=150932 [2022-11-23 16:06:31,027 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 382 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:31,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 385 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 16:06:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-11-23 16:06:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1151. [2022-11-23 16:06:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.0008695652173913) internal successors, (1151), 1150 states have internal predecessors, (1151), 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) [2022-11-23 16:06:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1151 transitions. [2022-11-23 16:06:31,077 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1151 transitions. Word has length 574 [2022-11-23 16:06:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:31,078 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1151 transitions. [2022-11-23 16:06:31,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 2.9947780678851177) internal successors, (1147), 384 states have internal predecessors, (1147), 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) [2022-11-23 16:06:31,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1151 transitions. [2022-11-23 16:06:31,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2022-11-23 16:06:31,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:31,132 INFO L195 NwaCegarLoop]: trace histogram [383, 382, 382, 1, 1, 1] [2022-11-23 16:06:31,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 16:06:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 16:06:31,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:06:31,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1689696471, now seen corresponding path program 8 times [2022-11-23 16:06:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:31,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954251975] [2022-11-23 16:06:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:31,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 219077 backedges. 0 proven. 219077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:45,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954251975] [2022-11-23 16:08:45,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954251975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:08:45,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728473202] [2022-11-23 16:08:45,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:08:45,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:08:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:08:45,063 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:08:45,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 16:08:47,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-23 16:08:47,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:08:47,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-23 16:08:47,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:08:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 219077 backedges. 0 proven. 219077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:49,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:11:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 219077 backedges. 0 proven. 219077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:58,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728473202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:11:58,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1811305620] [2022-11-23 16:11:58,210 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 16:11:58,210 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:11:58,211 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:11:58,211 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:11:58,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:11:58,234 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:11:59,341 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21335#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-23 16:11:59,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:11:59,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:11:59,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2022-11-23 16:11:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316975966] [2022-11-23 16:11:59,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:11:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-23 16:11:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:59,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-23 16:11:59,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294544, Invalid=302212, Unknown=0, NotChecked=0, Total=596756 [2022-11-23 16:11:59,437 INFO L87 Difference]: Start difference. First operand 1151 states and 1151 transitions. Second operand has 768 states, 767 states have (on average 2.997392438070404) internal successors, (2299), 768 states have internal predecessors, (2299), 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) [2022-11-23 16:12:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:34,115 INFO L93 Difference]: Finished difference Result 2304 states and 2687 transitions. [2022-11-23 16:12:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-11-23 16:12:34,117 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 2.997392438070404) internal successors, (2299), 768 states have internal predecessors, (2299), 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 1150 [2022-11-23 16:12:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:34,126 INFO L225 Difference]: With dead ends: 2304 [2022-11-23 16:12:34,126 INFO L226 Difference]: Without dead ends: 2303 [2022-11-23 16:12:34,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3832 GetRequests, 3061 SyntacticMatches, 0 SemanticMatches, 771 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5736 ImplicationChecksByTransitivity, 256.2s TimeCoverageRelationStatistics Valid=294544, Invalid=302212, Unknown=0, NotChecked=0, Total=596756 [2022-11-23 16:12:34,166 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1149 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:34,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 769 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 16:12:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2022-11-23 16:12:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2303. [2022-11-23 16:12:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 1.0004344048653344) internal successors, (2303), 2302 states have internal predecessors, (2303), 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) [2022-11-23 16:12:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2303 transitions. [2022-11-23 16:12:34,243 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2303 transitions. Word has length 1150 [2022-11-23 16:12:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:34,244 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 2303 transitions. [2022-11-23 16:12:34,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 2.997392438070404) internal successors, (2299), 768 states have internal predecessors, (2299), 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) [2022-11-23 16:12:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2303 transitions. [2022-11-23 16:12:34,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2303 [2022-11-23 16:12:34,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:34,385 INFO L195 NwaCegarLoop]: trace histogram [767, 766, 766, 1, 1, 1] [2022-11-23 16:12:34,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:34,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c31dc6-bc68-4520-83a7-6f40426f9cd4/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:12:34,593 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 16:12:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:34,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1209055447, now seen corresponding path program 9 times [2022-11-23 16:12:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:12:34,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826181759] [2022-11-23 16:12:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:12:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat