./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/jain_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/jain_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce25b6bd0efa145a105c85604d85a015d6e6bffce3769a218e2fa9a5cf656dc9 --- 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-38b53e6 [2022-11-25 23:34:49,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:34:49,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:34:49,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:34:49,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:34:49,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:34:49,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:34:49,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:34:49,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:34:49,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:34:49,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:34:49,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:34:49,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:34:49,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:34:49,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:34:49,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:34:49,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:34:49,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:34:49,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:34:49,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:34:49,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:34:49,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:34:49,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:34:49,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:34:49,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:34:49,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:34:49,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:34:49,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:34:49,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:34:49,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:34:49,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:34:49,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:34:49,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:34:49,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:34:49,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:34:49,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:34:49,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:34:49,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:34:49,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:34:49,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:34:49,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:34:49,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:34:49,528 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:34:49,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:34:49,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:34:49,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:34:49,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:34:49,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:34:49,530 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:34:49,530 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:34:49,530 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:34:49,530 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:34:49,531 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:34:49,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:34:49,532 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:34:49,532 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:34:49,532 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:34:49,532 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:34:49,532 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:34:49,533 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:34:49,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:34:49,533 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:34:49,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:34:49,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:34:49,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:34:49,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:34:49,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:34:49,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:34:49,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:34:49,535 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:34:49,535 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:34:49,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:34:49,535 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:34:49,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:34:49,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:34:49,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:34:49,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:34:49,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:34:49,537 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:34:49,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:34:49,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:34:49,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:34:49,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:34:49,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:34:49,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:34:49,547 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_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce25b6bd0efa145a105c85604d85a015d6e6bffce3769a218e2fa9a5cf656dc9 [2022-11-25 23:34:49,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:34:49,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:34:49,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:34:49,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:34:49,873 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:34:49,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/bitvector/jain_5-1.c [2022-11-25 23:34:52,864 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:34:53,093 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:34:53,094 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/sv-benchmarks/c/bitvector/jain_5-1.c [2022-11-25 23:34:53,101 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/data/68257c033/6b5fe469872144bd847973036d53e446/FLAG0d5691ce7 [2022-11-25 23:34:53,167 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/data/68257c033/6b5fe469872144bd847973036d53e446 [2022-11-25 23:34:53,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:34:53,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:34:53,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:34:53,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:34:53,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:34:53,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec181cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53, skipping insertion in model container [2022-11-25 23:34:53,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:34:53,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:34:53,382 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/sv-benchmarks/c/bitvector/jain_5-1.c[665,678] [2022-11-25 23:34:53,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:34:53,401 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:34:53,412 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/sv-benchmarks/c/bitvector/jain_5-1.c[665,678] [2022-11-25 23:34:53,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:34:53,432 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:34:53,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53 WrapperNode [2022-11-25 23:34:53,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:34:53,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:34:53,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:34:53,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:34:53,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,464 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-11-25 23:34:53,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:34:53,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:34:53,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:34:53,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:34:53,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:34:53,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:34:53,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:34:53,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:34:53,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (1/1) ... [2022-11-25 23:34:53,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:34:53,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:53,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:34:53,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:34:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:34:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:34:53,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:34:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:34:53,632 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:34:53,634 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:34:53,740 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:34:53,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:34:53,769 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:34:53,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:34:53 BoogieIcfgContainer [2022-11-25 23:34:53,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:34:53,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:34:53,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:34:53,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:34:53,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:34:53" (1/3) ... [2022-11-25 23:34:53,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b70485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:34:53, skipping insertion in model container [2022-11-25 23:34:53,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:53" (2/3) ... [2022-11-25 23:34:53,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b70485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:34:53, skipping insertion in model container [2022-11-25 23:34:53,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:34:53" (3/3) ... [2022-11-25 23:34:53,781 INFO L112 eAbstractionObserver]: Analyzing ICFG jain_5-1.c [2022-11-25 23:34:53,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:34:53,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 23:34:53,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:34:53,867 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;@227f2a00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:34:53,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 23:34:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-11-25 23:34:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:34:53,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:53,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:34:53,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash 67623, now seen corresponding path program 1 times [2022-11-25 23:34:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:53,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040059001] [2022-11-25 23:34:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:54,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:54,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040059001] [2022-11-25 23:34:54,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040059001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:54,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:54,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:34:54,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77626879] [2022-11-25 23:34:54,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:54,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:54,223 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:54,264 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-11-25 23:34:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:54,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 23:34:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:54,276 INFO L225 Difference]: With dead ends: 16 [2022-11-25 23:34:54,276 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:34:54,279 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 [2022-11-25 23:34:54,283 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:54,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:34:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-25 23:34:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-25 23:34:54,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2022-11-25 23:34:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:54,319 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-25 23:34:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-25 23:34:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:34:54,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:54,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:34:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:34:54,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2096358, now seen corresponding path program 1 times [2022-11-25 23:34:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:54,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770261799] [2022-11-25 23:34:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:54,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:54,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:54,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770261799] [2022-11-25 23:34:54,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770261799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:54,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:54,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:34:54,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029727713] [2022-11-25 23:34:54,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:54,393 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-25 23:34:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:54,416 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-25 23:34:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:54,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2022-11-25 23:34:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:54,418 INFO L225 Difference]: With dead ends: 14 [2022-11-25 23:34:54,418 INFO L226 Difference]: Without dead ends: 13 [2022-11-25 23:34:54,419 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 [2022-11-25 23:34:54,420 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:54,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-25 23:34:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-25 23:34:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 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) [2022-11-25 23:34:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-25 23:34:54,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2022-11-25 23:34:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:54,426 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-25 23:34:54,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-25 23:34:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-25 23:34:54,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:34:54,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:54,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:34:54,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:34:54,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash 64987145, now seen corresponding path program 1 times [2022-11-25 23:34:54,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:54,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836295425] [2022-11-25 23:34:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:54,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:54,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:54,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836295425] [2022-11-25 23:34:54,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836295425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:54,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:54,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:34:54,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993198468] [2022-11-25 23:34:54,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:54,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:54,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:54,469 INFO L87 Difference]: Start difference. First operand 13 states and 13 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) [2022-11-25 23:34:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:54,513 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-25 23:34:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:54,514 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 [2022-11-25 23:34:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:54,514 INFO L225 Difference]: With dead ends: 13 [2022-11-25 23:34:54,515 INFO L226 Difference]: Without dead ends: 12 [2022-11-25 23:34:54,515 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 [2022-11-25 23:34:54,517 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:54,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-25 23:34:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-25 23:34:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-25 23:34:54,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2022-11-25 23:34:54,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:54,522 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-25 23:34:54,522 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) [2022-11-25 23:34:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-25 23:34:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:34:54,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:54,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:34:54,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:34:54,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2014601544, now seen corresponding path program 1 times [2022-11-25 23:34:54,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:54,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302945328] [2022-11-25 23:34:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:54,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:54,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:54,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302945328] [2022-11-25 23:34:54,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302945328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:54,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:54,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:34:54,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519383569] [2022-11-25 23:34:54,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:54,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:54,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:54,580 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:54,604 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-25 23:34:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:34:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:54,605 INFO L225 Difference]: With dead ends: 15 [2022-11-25 23:34:54,605 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:34:54,606 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 [2022-11-25 23:34:54,607 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:54,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:34:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-25 23:34:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-25 23:34:54,624 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2022-11-25 23:34:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:54,624 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-25 23:34:54,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-25 23:34:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:34:54,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:54,625 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:34:54,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:34:54,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:54,627 INFO L85 PathProgramCache]: Analyzing trace with hash -998142334, now seen corresponding path program 1 times [2022-11-25 23:34:54,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:54,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801462707] [2022-11-25 23:34:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:54,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:54,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801462707] [2022-11-25 23:34:54,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801462707] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:34:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326835722] [2022-11-25 23:34:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:54,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:54,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:54,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:34:54,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:34:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:54,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:34:54,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:34:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:55,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:34:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326835722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:55,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:34:55,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-11-25 23:34:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776609172] [2022-11-25 23:34:55,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:55,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:34:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:34:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:34:55,028 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:55,083 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-25 23:34:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:34:55,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:34:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:55,085 INFO L225 Difference]: With dead ends: 14 [2022-11-25 23:34:55,085 INFO L226 Difference]: Without dead ends: 13 [2022-11-25 23:34:55,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:34:55,087 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:55,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-25 23:34:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-25 23:34:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 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) [2022-11-25 23:34:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-25 23:34:55,093 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2022-11-25 23:34:55,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:55,094 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-25 23:34:55,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:55,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-25 23:34:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:34:55,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:55,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:34:55,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:34:55,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:55,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash -877641237, now seen corresponding path program 1 times [2022-11-25 23:34:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:55,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666857963] [2022-11-25 23:34:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:55,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:55,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666857963] [2022-11-25 23:34:55,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666857963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:34:55,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470311697] [2022-11-25 23:34:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:55,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:55,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:55,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:34:55,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:34:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:55,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:34:55,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:34:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:55,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:34:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:55,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470311697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:34:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [527498403] [2022-11-25 23:34:55,627 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:34:55,627 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:34:55,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:34:55,637 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:34:55,637 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:34:56,074 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:34:56,607 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '286#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (not (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:34:56,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:34:56,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:34:56,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-25 23:34:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379656467] [2022-11-25 23:34:56,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:34:56,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:34:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:56,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:34:56,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:34:56,611 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:56,716 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-25 23:34:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:34:56,725 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:34:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:56,725 INFO L225 Difference]: With dead ends: 23 [2022-11-25 23:34:56,726 INFO L226 Difference]: Without dead ends: 22 [2022-11-25 23:34:56,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:34:56,727 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:56,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:56,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-25 23:34:56,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-11-25 23:34:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-25 23:34:56,733 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2022-11-25 23:34:56,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:56,733 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-25 23:34:56,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:56,734 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-25 23:34:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:34:56,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:56,734 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2022-11-25 23:34:56,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:34:56,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:56,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:56,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:56,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1599637235, now seen corresponding path program 1 times [2022-11-25 23:34:56,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:56,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774692132] [2022-11-25 23:34:56,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:56,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:56,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:56,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774692132] [2022-11-25 23:34:56,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774692132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:34:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698835585] [2022-11-25 23:34:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:56,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:56,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:34:57,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:34:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:57,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:34:57,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:34:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:57,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:34:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:57,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698835585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:34:57,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [356000275] [2022-11-25 23:34:57,101 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:34:57,101 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:34:57,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:34:57,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:34:57,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:34:57,316 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:34:57,726 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '421#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (< 2147483643 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:34:57,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:34:57,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:34:57,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-25 23:34:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990439967] [2022-11-25 23:34:57,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:34:57,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:34:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:34:57,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:34:57,728 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:57,772 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-25 23:34:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:34:57,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 23:34:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:57,773 INFO L225 Difference]: With dead ends: 30 [2022-11-25 23:34:57,773 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 23:34:57,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:34:57,774 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:57,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 23:34:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-25 23:34:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-25 23:34:57,780 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 11 [2022-11-25 23:34:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:57,780 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-25 23:34:57,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-25 23:34:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 23:34:57,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:57,781 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1] [2022-11-25 23:34:57,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:34:57,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:57,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1522476341, now seen corresponding path program 2 times [2022-11-25 23:34:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:57,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600048781] [2022-11-25 23:34:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:58,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:58,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600048781] [2022-11-25 23:34:58,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600048781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:34:58,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472170653] [2022-11-25 23:34:58,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:34:58,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:58,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:58,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:34:58,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:34:58,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:34:58,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:34:58,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 23:34:58,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:34:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:58,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:34:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:58,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472170653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:34:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1064053897] [2022-11-25 23:34:58,525 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:34:58,525 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:34:58,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:34:58,526 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:34:58,526 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:34:58,691 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:34:58,950 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '635#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (not (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:34:58,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:34:58,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:34:58,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-25 23:34:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454876390] [2022-11-25 23:34:58,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:34:58,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 23:34:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 23:34:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2022-11-25 23:34:58,953 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 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) [2022-11-25 23:34:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:59,192 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2022-11-25 23:34:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:34:59,193 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 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 19 [2022-11-25 23:34:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:59,194 INFO L225 Difference]: With dead ends: 44 [2022-11-25 23:34:59,194 INFO L226 Difference]: Without dead ends: 43 [2022-11-25 23:34:59,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 23:34:59,195 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:59,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 19 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:34:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-25 23:34:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-11-25 23:34:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 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) [2022-11-25 23:34:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-11-25 23:34:59,203 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2022-11-25 23:34:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:59,203 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-11-25 23:34:59,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 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) [2022-11-25 23:34:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-11-25 23:34:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 23:34:59,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:59,204 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1] [2022-11-25 23:34:59,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:34:59,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:59,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:34:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1202790280, now seen corresponding path program 2 times [2022-11-25 23:34:59,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:59,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228827149] [2022-11-25 23:34:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:59,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:59,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228827149] [2022-11-25 23:34:59,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228827149] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:34:59,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423011753] [2022-11-25 23:34:59,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:34:59,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:59,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:59,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:34:59,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:34:59,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 23:34:59,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:34:59,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 23:34:59,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:34:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:59,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:34:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:59,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423011753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:34:59,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1897806881] [2022-11-25 23:34:59,892 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:34:59,892 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:34:59,892 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:34:59,893 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:34:59,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:35:00,080 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:35:00,336 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '941#(and (< 2147483643 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-25 23:35:00,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:35:00,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:35:00,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 19 [2022-11-25 23:35:00,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806551657] [2022-11-25 23:35:00,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:35:00,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 23:35:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 23:35:00,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-11-25 23:35:00,339 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 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) [2022-11-25 23:35:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:35:00,682 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2022-11-25 23:35:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 23:35:00,682 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 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 26 [2022-11-25 23:35:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:35:00,683 INFO L225 Difference]: With dead ends: 68 [2022-11-25 23:35:00,683 INFO L226 Difference]: Without dead ends: 67 [2022-11-25 23:35:00,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=266, Invalid=1140, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 23:35:00,685 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:35:00,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:35:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-25 23:35:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2022-11-25 23:35:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.098360655737705) internal successors, (67), 62 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) [2022-11-25 23:35:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-11-25 23:35:00,697 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 26 [2022-11-25 23:35:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:35:00,697 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-11-25 23:35:00,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 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) [2022-11-25 23:35:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-11-25 23:35:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 23:35:00,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:00,699 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1] [2022-11-25 23:35:00,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:35:00,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 23:35:00,912 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:35:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash 641418379, now seen corresponding path program 3 times [2022-11-25 23:35:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:00,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009733731] [2022-11-25 23:35:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:01,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:35:01,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009733731] [2022-11-25 23:35:01,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009733731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:35:01,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977933124] [2022-11-25 23:35:01,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:35:01,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:35:01,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:35:01,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:35:01,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:35:01,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:35:01,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:35:01,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:35:01,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:35:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:01,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:35:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:02,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977933124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:35:02,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [861301287] [2022-11-25 23:35:02,148 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:35:02,148 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:35:02,148 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:35:02,148 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:35:02,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:35:02,307 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:35:02,728 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1425#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (not (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:35:02,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:35:02,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:35:02,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-11-25 23:35:02,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932445156] [2022-11-25 23:35:02,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:35:02,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-25 23:35:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-25 23:35:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=1948, Unknown=0, NotChecked=0, Total=2550 [2022-11-25 23:35:02,732 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 47 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 46 states have internal predecessors, (117), 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) [2022-11-25 23:35:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:35:03,640 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2022-11-25 23:35:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 23:35:03,641 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 46 states have internal predecessors, (117), 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 39 [2022-11-25 23:35:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:35:03,641 INFO L225 Difference]: With dead ends: 85 [2022-11-25 23:35:03,641 INFO L226 Difference]: Without dead ends: 84 [2022-11-25 23:35:03,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 73 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1395, Invalid=3717, Unknown=0, NotChecked=0, Total=5112 [2022-11-25 23:35:03,644 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 54 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:35:03,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 37 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:35:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-25 23:35:03,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2022-11-25 23:35:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 80 states have internal predecessors, (84), 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) [2022-11-25 23:35:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2022-11-25 23:35:03,656 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 39 [2022-11-25 23:35:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:35:03,656 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2022-11-25 23:35:03,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 46 states have internal predecessors, (117), 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) [2022-11-25 23:35:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2022-11-25 23:35:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 23:35:03,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:03,657 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 1, 1] [2022-11-25 23:35:03,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:35:03,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 23:35:03,875 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:35:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:03,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1425740435, now seen corresponding path program 3 times [2022-11-25 23:35:03,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:03,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79662479] [2022-11-25 23:35:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:03,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:04,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:35:04,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79662479] [2022-11-25 23:35:04,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79662479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:35:04,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782250052] [2022-11-25 23:35:04,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:35:04,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:35:04,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:35:04,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:35:04,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:35:04,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:35:04,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:35:04,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 23:35:04,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:35:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:04,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:35:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:05,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782250052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:35:05,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [327425977] [2022-11-25 23:35:05,373 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:35:05,373 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:35:05,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:35:05,374 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:35:05,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:35:05,546 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:35:06,703 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2108#(and (< 2147483643 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-25 23:35:06,703 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:35:06,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:35:06,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 47 [2022-11-25 23:35:06,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446335814] [2022-11-25 23:35:06,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:35:06,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-25 23:35:06,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-25 23:35:06,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=2318, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 23:35:06,708 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 49 states, 48 states have (on average 3.8125) internal successors, (183), 48 states have internal predecessors, (183), 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) [2022-11-25 23:35:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:35:07,856 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2022-11-25 23:35:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-25 23:35:07,857 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 3.8125) internal successors, (183), 48 states have internal predecessors, (183), 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 61 [2022-11-25 23:35:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:35:07,858 INFO L225 Difference]: With dead ends: 144 [2022-11-25 23:35:07,858 INFO L226 Difference]: Without dead ends: 143 [2022-11-25 23:35:07,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 141 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2668 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1122, Invalid=6188, Unknown=0, NotChecked=0, Total=7310 [2022-11-25 23:35:07,861 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:35:07,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 232 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:35:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-25 23:35:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 133. [2022-11-25 23:35:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.0916030534351144) internal successors, (143), 132 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) [2022-11-25 23:35:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2022-11-25 23:35:07,886 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 61 [2022-11-25 23:35:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:35:07,886 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2022-11-25 23:35:07,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 3.8125) internal successors, (183), 48 states have internal predecessors, (183), 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) [2022-11-25 23:35:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2022-11-25 23:35:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 23:35:07,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:07,889 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 1, 1] [2022-11-25 23:35:07,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:35:08,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 23:35:08,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:35:08,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1046280203, now seen corresponding path program 4 times [2022-11-25 23:35:08,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:08,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280774045] [2022-11-25 23:35:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:08,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:09,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:35:09,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280774045] [2022-11-25 23:35:09,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280774045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:35:09,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584818950] [2022-11-25 23:35:09,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 23:35:09,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:35:09,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:35:09,159 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:35:09,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:35:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:09,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 23:35:09,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:35:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:10,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:35:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:11,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584818950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:35:11,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1685311761] [2022-11-25 23:35:11,743 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:35:11,744 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:35:11,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:35:11,744 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:35:11,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:35:11,893 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:35:12,865 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3122#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (not (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:35:12,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:35:12,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:35:12,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 93 [2022-11-25 23:35:12,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874045403] [2022-11-25 23:35:12,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:35:12,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-11-25 23:35:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:12,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-11-25 23:35:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2166, Invalid=7536, Unknown=0, NotChecked=0, Total=9702 [2022-11-25 23:35:12,882 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 95 states, 94 states have (on average 2.521276595744681) internal successors, (237), 94 states have internal predecessors, (237), 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) [2022-11-25 23:35:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:35:16,840 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2022-11-25 23:35:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-25 23:35:16,841 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 2.521276595744681) internal successors, (237), 94 states have internal predecessors, (237), 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 79 [2022-11-25 23:35:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:35:16,842 INFO L225 Difference]: With dead ends: 167 [2022-11-25 23:35:16,842 INFO L226 Difference]: Without dead ends: 166 [2022-11-25 23:35:16,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 153 SyntacticMatches, 16 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10297 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5711, Invalid=15459, Unknown=0, NotChecked=0, Total=21170 [2022-11-25 23:35:16,852 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 207 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:35:16,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 82 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:35:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-25 23:35:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 161. [2022-11-25 23:35:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0440251572327044) internal successors, (166), 160 states have internal predecessors, (166), 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) [2022-11-25 23:35:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 166 transitions. [2022-11-25 23:35:16,883 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 166 transitions. Word has length 79 [2022-11-25 23:35:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:35:16,884 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 166 transitions. [2022-11-25 23:35:16,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 2.521276595744681) internal successors, (237), 94 states have internal predecessors, (237), 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) [2022-11-25 23:35:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 166 transitions. [2022-11-25 23:35:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-25 23:35:16,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:16,895 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 1, 1] [2022-11-25 23:35:16,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:35:17,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:35:17,107 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:35:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1053240435, now seen corresponding path program 4 times [2022-11-25 23:35:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:17,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308465716] [2022-11-25 23:35:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:19,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:35:19,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308465716] [2022-11-25 23:35:19,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308465716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:35:19,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453643522] [2022-11-25 23:35:19,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 23:35:19,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:35:19,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:35:19,434 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:35:19,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 23:35:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:19,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 23:35:19,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:35:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:20,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:35:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:22,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453643522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:35:22,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1304389071] [2022-11-25 23:35:22,367 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:35:22,367 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:35:22,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:35:22,368 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:35:22,368 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:35:22,518 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:35:26,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4559#(and (< 2147483643 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-25 23:35:26,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:35:26,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:35:26,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 26, 26] total 103 [2022-11-25 23:35:26,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742948100] [2022-11-25 23:35:26,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:35:26,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-11-25 23:35:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:26,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-11-25 23:35:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1670, Invalid=10102, Unknown=0, NotChecked=0, Total=11772 [2022-11-25 23:35:26,694 INFO L87 Difference]: Start difference. First operand 161 states and 166 transitions. Second operand has 105 states, 104 states have (on average 3.7788461538461537) internal successors, (393), 104 states have internal predecessors, (393), 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) [2022-11-25 23:35:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:35:30,917 INFO L93 Difference]: Finished difference Result 296 states and 323 transitions. [2022-11-25 23:35:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-25 23:35:30,918 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 3.7788461538461537) internal successors, (393), 104 states have internal predecessors, (393), 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 131 [2022-11-25 23:35:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:35:30,921 INFO L225 Difference]: With dead ends: 296 [2022-11-25 23:35:30,921 INFO L226 Difference]: Without dead ends: 295 [2022-11-25 23:35:30,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 309 SyntacticMatches, 26 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12452 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=4520, Invalid=28422, Unknown=0, NotChecked=0, Total=32942 [2022-11-25 23:35:30,925 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 72 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 4551 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 4577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:35:30,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1111 Invalid, 4577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4551 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 23:35:30,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-25 23:35:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 273. [2022-11-25 23:35:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 1.088560885608856) internal successors, (295), 272 states have internal predecessors, (295), 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) [2022-11-25 23:35:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2022-11-25 23:35:30,975 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 131 [2022-11-25 23:35:30,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:35:30,976 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2022-11-25 23:35:30,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 3.7788461538461537) internal successors, (393), 104 states have internal predecessors, (393), 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) [2022-11-25 23:35:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2022-11-25 23:35:30,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-25 23:35:30,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:30,979 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 1, 1] [2022-11-25 23:35:30,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 23:35:31,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:35:31,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:35:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1905516299, now seen corresponding path program 5 times [2022-11-25 23:35:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:31,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697582449] [2022-11-25 23:35:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:34,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:35:34,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697582449] [2022-11-25 23:35:34,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697582449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:35:34,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981545159] [2022-11-25 23:35:34,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:35:34,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:35:34,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:35:34,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:35:34,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 23:35:34,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-25 23:35:34,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:35:34,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-25 23:35:34,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:35:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:37,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:35:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:42,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981545159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:35:42,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [853924768] [2022-11-25 23:35:42,615 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:35:42,615 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:35:42,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:35:42,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:35:42,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:35:42,763 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:35:45,454 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6633#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (not (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:35:45,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:35:45,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:35:45,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 189 [2022-11-25 23:35:45,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301873716] [2022-11-25 23:35:45,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:35:45,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2022-11-25 23:35:45,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2022-11-25 23:35:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8174, Invalid=29656, Unknown=0, NotChecked=0, Total=37830 [2022-11-25 23:35:45,464 INFO L87 Difference]: Start difference. First operand 273 states and 295 transitions. Second operand has 191 states, 190 states have (on average 2.5105263157894737) internal successors, (477), 190 states have internal predecessors, (477), 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) [2022-11-25 23:36:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:06,766 INFO L93 Difference]: Finished difference Result 331 states and 362 transitions. [2022-11-25 23:36:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-25 23:36:06,767 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 190 states have (on average 2.5105263157894737) internal successors, (477), 190 states have internal predecessors, (477), 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 159 [2022-11-25 23:36:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:06,769 INFO L225 Difference]: With dead ends: 331 [2022-11-25 23:36:06,769 INFO L226 Difference]: Without dead ends: 330 [2022-11-25 23:36:06,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 313 SyntacticMatches, 32 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42455 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=23127, Invalid=63015, Unknown=0, NotChecked=0, Total=86142 [2022-11-25 23:36:06,777 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 962 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:06,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 150 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:36:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-25 23:36:06,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 321. [2022-11-25 23:36:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 319 states have (on average 1.0344827586206897) internal successors, (330), 320 states have internal predecessors, (330), 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) [2022-11-25 23:36:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 330 transitions. [2022-11-25 23:36:06,848 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 330 transitions. Word has length 159 [2022-11-25 23:36:06,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:06,848 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 330 transitions. [2022-11-25 23:36:06,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 190 states have (on average 2.5105263157894737) internal successors, (477), 190 states have internal predecessors, (477), 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) [2022-11-25 23:36:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 330 transitions. [2022-11-25 23:36:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-25 23:36:06,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:06,853 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 54, 53, 1, 1] [2022-11-25 23:36:06,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 23:36:07,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 23:36:07,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:36:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash 639129549, now seen corresponding path program 5 times [2022-11-25 23:36:07,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:07,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117619129] [2022-11-25 23:36:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 0 proven. 7155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:15,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:15,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117619129] [2022-11-25 23:36:15,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117619129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:36:15,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935033736] [2022-11-25 23:36:15,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:36:15,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:36:15,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:36:15,431 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:36:15,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 23:36:15,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 23:36:15,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:36:15,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 23:36:15,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:36:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 906 proven. 24 refuted. 0 times theorem prover too weak. 6225 trivial. 0 not checked. [2022-11-25 23:36:16,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:36:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 906 proven. 24 refuted. 0 times theorem prover too weak. 6225 trivial. 0 not checked. [2022-11-25 23:36:16,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935033736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:36:16,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708692215] [2022-11-25 23:36:16,903 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:36:16,903 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:36:16,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:36:16,904 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:36:16,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:36:17,002 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:36:23,618 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9484#(and (< 2147483643 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-25 23:36:23,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:36:23,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:36:23,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 8, 8] total 122 [2022-11-25 23:36:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046193002] [2022-11-25 23:36:23,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:36:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-11-25 23:36:23,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:36:23,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-11-25 23:36:23,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=15505, Unknown=0, NotChecked=0, Total=16002 [2022-11-25 23:36:23,622 INFO L87 Difference]: Start difference. First operand 321 states and 330 transitions. Second operand has 123 states, 122 states have (on average 2.581967213114754) internal successors, (315), 123 states have internal predecessors, (315), 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) [2022-11-25 23:36:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:36:37,264 INFO L93 Difference]: Finished difference Result 321 states and 330 transitions. [2022-11-25 23:36:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-11-25 23:36:37,265 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 2.581967213114754) internal successors, (315), 123 states have internal predecessors, (315), 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 271 [2022-11-25 23:36:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:36:37,267 INFO L225 Difference]: With dead ends: 321 [2022-11-25 23:36:37,267 INFO L226 Difference]: Without dead ends: 320 [2022-11-25 23:36:37,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 739 SyntacticMatches, 54 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20097 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=2722, Invalid=54160, Unknown=0, NotChecked=0, Total=56882 [2022-11-25 23:36:37,271 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 543 mSDsluCounter, 4083 mSDsCounter, 0 mSdLazyCounter, 16436 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 4137 SdHoareTripleChecker+Invalid, 16813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 16436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:36:37,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 4137 Invalid, 16813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [377 Valid, 16436 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-25 23:36:37,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-25 23:36:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-11-25 23:36:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.0031347962382444) internal successors, (320), 319 states have internal predecessors, (320), 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) [2022-11-25 23:36:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2022-11-25 23:36:37,303 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 271 [2022-11-25 23:36:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:36:37,304 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2022-11-25 23:36:37,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 2.581967213114754) internal successors, (315), 123 states have internal predecessors, (315), 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) [2022-11-25 23:36:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2022-11-25 23:36:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-25 23:36:37,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:36:37,308 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 63, 1, 1] [2022-11-25 23:36:37,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 23:36:37,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 23:36:37,513 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:36:37,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:36:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1976544523, now seen corresponding path program 6 times [2022-11-25 23:36:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:36:37,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141444821] [2022-11-25 23:36:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:36:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:36:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:36:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:47,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:36:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141444821] [2022-11-25 23:36:47,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141444821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:36:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359826656] [2022-11-25 23:36:47,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:36:47,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:36:47,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:36:47,915 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:36:47,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 23:36:48,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:36:48,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:36:48,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-25 23:36:48,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:36:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:36:59,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:37:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:37:17,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359826656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:37:17,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [175321753] [2022-11-25 23:37:17,999 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:37:18,000 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:37:18,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:37:18,000 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:37:18,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:37:18,088 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:37:26,836 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12898#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (not (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:37:26,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:37:26,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:37:26,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 381 [2022-11-25 23:37:26,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845617134] [2022-11-25 23:37:26,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:37:26,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 383 states [2022-11-25 23:37:26,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 383 interpolants. [2022-11-25 23:37:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31710, Invalid=117672, Unknown=0, NotChecked=0, Total=149382 [2022-11-25 23:37:26,850 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand has 383 states, 382 states have (on average 2.505235602094241) internal successors, (957), 382 states have internal predecessors, (957), 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) [2022-11-25 23:39:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:17,036 INFO L93 Difference]: Finished difference Result 641 states and 704 transitions. [2022-11-25 23:39:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2022-11-25 23:39:17,038 INFO L78 Accepts]: Start accepts. Automaton has has 383 states, 382 states have (on average 2.505235602094241) internal successors, (957), 382 states have internal predecessors, (957), 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 319 [2022-11-25 23:39:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:17,040 INFO L225 Difference]: With dead ends: 641 [2022-11-25 23:39:17,040 INFO L226 Difference]: Without dead ends: 640 [2022-11-25 23:39:17,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 633 SyntacticMatches, 64 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165515 ImplicationChecksByTransitivity, 146.1s TimeCoverageRelationStatistics Valid=89415, Invalid=239487, Unknown=0, NotChecked=0, Total=328902 [2022-11-25 23:39:17,056 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4081 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 2041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2041 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:17,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4081 Valid, 304 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2041 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 23:39:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-11-25 23:39:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2022-11-25 23:39:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 1.001564945226917) internal successors, (640), 639 states have internal predecessors, (640), 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) [2022-11-25 23:39:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 640 transitions. [2022-11-25 23:39:17,115 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 640 transitions. Word has length 319 [2022-11-25 23:39:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:17,116 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 640 transitions. [2022-11-25 23:39:17,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 383 states, 382 states have (on average 2.505235602094241) internal successors, (957), 382 states have internal predecessors, (957), 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) [2022-11-25 23:39:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 640 transitions. [2022-11-25 23:39:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2022-11-25 23:39:17,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:17,133 INFO L195 NwaCegarLoop]: trace histogram [128, 128, 127, 127, 127, 1, 1] [2022-11-25 23:39:17,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:17,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 23:39:17,340 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-25 23:39:17,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:17,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2055255797, now seen corresponding path program 7 times [2022-11-25 23:39:17,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:17,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969610955] [2022-11-25 23:39:17,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:17,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 40386 backedges. 0 proven. 40386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:58,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:58,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969610955] [2022-11-25 23:39:58,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969610955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:39:58,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131440681] [2022-11-25 23:39:58,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 23:39:58,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:39:58,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:39:58,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:39:58,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead70810-12b9-4b66-9738-717751065734/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 23:39:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:58,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 257 conjunts are in the unsatisfiable core [2022-11-25 23:39:58,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:40:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 40386 backedges. 0 proven. 40386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:40:43,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:41:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 40386 backedges. 0 proven. 40386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:41:54,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131440681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:41:54,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [331337995] [2022-11-25 23:41:54,986 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:41:54,987 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:41:54,987 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:41:54,987 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:41:54,987 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:41:55,097 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:42:27,844 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19662#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (not (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:42:27,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:42:27,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:42:27,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255, 255] total 765 [2022-11-25 23:42:27,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639607608] [2022-11-25 23:42:27,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:42:27,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 767 states [2022-11-25 23:42:27,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 767 interpolants. [2022-11-25 23:42:27,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124862, Invalid=468808, Unknown=0, NotChecked=0, Total=593670 [2022-11-25 23:42:27,897 INFO L87 Difference]: Start difference. First operand 640 states and 640 transitions. Second operand has 767 states, 766 states have (on average 2.5026109660574414) internal successors, (1917), 766 states have internal predecessors, (1917), 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)