./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/reducercommutativity/sep05-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/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_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sep05-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/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_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/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 ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 --- 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 22:25:00,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:25:00,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:25:00,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:25:00,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:25:00,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:25:00,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:25:00,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:25:00,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:25:00,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:25:00,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:25:00,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:25:00,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:25:00,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:25:00,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:25:00,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:25:00,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:25:00,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:25:00,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:25:00,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:25:00,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:25:00,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:25:00,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:25:00,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:25:00,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:25:00,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:25:00,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:25:00,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:25:00,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:25:00,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:25:00,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:25:00,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:25:00,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:25:00,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:25:00,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:25:00,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:25:00,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:25:00,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:25:00,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:25:00,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:25:00,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:25:00,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 22:25:00,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:25:00,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:25:00,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:25:00,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:25:00,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:25:00,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:25:00,476 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:25:00,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:25:00,476 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:25:00,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:25:00,477 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:25:00,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:25:00,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:25:00,478 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:25:00,478 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:25:00,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:25:00,479 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:25:00,479 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:25:00,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:25:00,480 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:25:00,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:25:00,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:25:00,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:25:00,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:25:00,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:25:00,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:25:00,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:25:00,483 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:25:00,483 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:25:00,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:25:00,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:25:00,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:25:00,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:25:00,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:25:00,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:25:00,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:25:00,486 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:25:00,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:25:00,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:25:00,488 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:25:00,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:25:00,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:25:00,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:25:00,488 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_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 [2022-11-25 22:25:00,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:25:00,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:25:00,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:25:00,807 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:25:00,808 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:25:00,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/reducercommutativity/sep05-1.i [2022-11-25 22:25:03,876 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:25:04,146 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:25:04,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/sv-benchmarks/c/reducercommutativity/sep05-1.i [2022-11-25 22:25:04,154 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/data/9ca5d93f1/06bce57ee2604a8f8186d76fe2b01060/FLAG82317ced9 [2022-11-25 22:25:04,176 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/data/9ca5d93f1/06bce57ee2604a8f8186d76fe2b01060 [2022-11-25 22:25:04,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:25:04,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:25:04,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:25:04,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:25:04,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:25:04,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bc066f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04, skipping insertion in model container [2022-11-25 22:25:04,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:25:04,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:25:04,405 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_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/sv-benchmarks/c/reducercommutativity/sep05-1.i[1287,1300] [2022-11-25 22:25:04,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:25:04,419 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:25:04,454 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_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/sv-benchmarks/c/reducercommutativity/sep05-1.i[1287,1300] [2022-11-25 22:25:04,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:25:04,472 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:25:04,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04 WrapperNode [2022-11-25 22:25:04,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:25:04,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:25:04,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:25:04,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:25:04,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,528 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-11-25 22:25:04,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:25:04,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:25:04,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:25:04,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:25:04,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:25:04,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:25:04,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:25:04,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:25:04,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (1/1) ... [2022-11-25 22:25:04,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:25:04,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:04,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:25:04,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:25:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:25:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:25:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:25:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:25:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:25:04,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:25:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:25:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:25:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2022-11-25 22:25:04,679 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2022-11-25 22:25:04,788 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:25:04,790 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:25:05,042 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:25:05,113 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:25:05,122 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 22:25:05,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:25:05 BoogieIcfgContainer [2022-11-25 22:25:05,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:25:05,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:25:05,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:25:05,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:25:05,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:25:04" (1/3) ... [2022-11-25 22:25:05,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b42e737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:25:05, skipping insertion in model container [2022-11-25 22:25:05,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:04" (2/3) ... [2022-11-25 22:25:05,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b42e737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:25:05, skipping insertion in model container [2022-11-25 22:25:05,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:25:05" (3/3) ... [2022-11-25 22:25:05,140 INFO L112 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2022-11-25 22:25:05,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:25:05,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-25 22:25:05,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:25:05,232 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;@7cd200e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:25:05,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-25 22:25:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:25:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:25:05,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:05,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:25:05,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:05,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash 127950, now seen corresponding path program 1 times [2022-11-25 22:25:05,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:05,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207196237] [2022-11-25 22:25:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:05,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:05,524 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 22:25:05,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:05,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207196237] [2022-11-25 22:25:05,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207196237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:05,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:05,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:25:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658394724] [2022-11-25 22:25:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:25:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:05,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:25:05,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:25:05,597 INFO L87 Difference]: Start difference. First operand has 39 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 22:25:05,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:05,707 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2022-11-25 22:25:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:25:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 22:25:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:05,715 INFO L225 Difference]: With dead ends: 77 [2022-11-25 22:25:05,715 INFO L226 Difference]: Without dead ends: 40 [2022-11-25 22:25:05,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:25:05,721 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:05,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-25 22:25:05,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-25 22:25:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-11-25 22:25:05,759 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 3 [2022-11-25 22:25:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:05,760 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-11-25 22:25:05,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 22:25:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-11-25 22:25:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:25:05,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:05,761 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 22:25:05,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:25:05,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -483160659, now seen corresponding path program 1 times [2022-11-25 22:25:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:05,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614384457] [2022-11-25 22:25:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:05,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:05,883 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 22:25:05,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:05,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614384457] [2022-11-25 22:25:05,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614384457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:05,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898121558] [2022-11-25 22:25:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:05,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:05,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:05,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:05,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:25:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:05,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:05,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:06,031 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 22:25:06,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:06,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898121558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:06,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:25:06,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-11-25 22:25:06,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756658434] [2022-11-25 22:25:06,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:06,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:25:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:25:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:25:06,036 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 22:25:06,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:06,074 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-25 22:25:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:25:06,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 22:25:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:06,076 INFO L225 Difference]: With dead ends: 40 [2022-11-25 22:25:06,076 INFO L226 Difference]: Without dead ends: 39 [2022-11-25 22:25:06,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:25:06,078 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:06,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:06,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-25 22:25:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-25 22:25:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.625) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-25 22:25:06,087 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 6 [2022-11-25 22:25:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:06,100 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-25 22:25:06,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 22:25:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-25 22:25:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 22:25:06,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:06,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-25 22:25:06,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:06,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:06,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2093078495, now seen corresponding path program 1 times [2022-11-25 22:25:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:06,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498776984] [2022-11-25 22:25:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:25:06,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:06,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498776984] [2022-11-25 22:25:06,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498776984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:06,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:06,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:25:06,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431812550] [2022-11-25 22:25:06,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:06,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:25:06,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:25:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:25:06,429 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:06,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:06,478 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-25 22:25:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:25:06,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 22:25:06,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:06,480 INFO L225 Difference]: With dead ends: 39 [2022-11-25 22:25:06,480 INFO L226 Difference]: Without dead ends: 38 [2022-11-25 22:25:06,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:25:06,482 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:06,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-25 22:25:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-25 22:25:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-25 22:25:06,488 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 7 [2022-11-25 22:25:06,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:06,489 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-25 22:25:06,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-25 22:25:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:25:06,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:06,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:06,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:25:06,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash -322008546, now seen corresponding path program 1 times [2022-11-25 22:25:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:06,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644661785] [2022-11-25 22:25:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:06,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:06,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:06,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644661785] [2022-11-25 22:25:06,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644661785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:06,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118036899] [2022-11-25 22:25:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:06,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:06,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:06,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:06,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:25:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:06,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:06,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:06,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:06,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118036899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:06,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [11041306] [2022-11-25 22:25:06,764 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 22:25:06,764 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:06,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:06,779 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:06,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:06,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:06,875 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:06,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:06,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:06,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:06,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:06,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:07,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:07,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:07,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:07,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:07,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:07,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:07,299 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-25 22:25:07,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-25 22:25:07,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:07,513 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:07,528 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:07,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [11041306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:07,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:07,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2022-11-25 22:25:07,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936768663] [2022-11-25 22:25:07,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:07,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 22:25:07,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 22:25:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:25:07,937 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:08,293 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2022-11-25 22:25:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:25:08,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 22:25:08,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:08,295 INFO L225 Difference]: With dead ends: 74 [2022-11-25 22:25:08,296 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 22:25:08,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-25 22:25:08,297 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:08,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 110 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:25:08,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 22:25:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-11-25 22:25:08,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:08,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-11-25 22:25:08,307 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 10 [2022-11-25 22:25:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:08,308 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-11-25 22:25:08,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:08,308 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-11-25 22:25:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:25:08,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:08,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:08,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:08,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:08,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:08,515 INFO L85 PathProgramCache]: Analyzing trace with hash -322008354, now seen corresponding path program 1 times [2022-11-25 22:25:08,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:08,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803264411] [2022-11-25 22:25:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:08,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:08,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:08,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803264411] [2022-11-25 22:25:08,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803264411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:08,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544799994] [2022-11-25 22:25:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:08,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:08,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:08,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:08,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:25:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:08,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:08,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:08,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:08,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544799994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:08,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [224665042] [2022-11-25 22:25:08,690 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 22:25:08,690 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:08,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:08,691 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:08,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:08,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,720 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:08,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:08,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:08,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:08,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:08,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:08,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:08,969 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-25 22:25:08,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-11-25 22:25:09,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:09,129 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:09,147 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:09,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [224665042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:09,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:09,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2022-11-25 22:25:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017318767] [2022-11-25 22:25:09,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:09,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 22:25:09,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:09,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 22:25:09,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:25:09,531 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:09,864 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-11-25 22:25:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:25:09,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 22:25:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:09,865 INFO L225 Difference]: With dead ends: 44 [2022-11-25 22:25:09,865 INFO L226 Difference]: Without dead ends: 42 [2022-11-25 22:25:09,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-25 22:25:09,869 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:09,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 83 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-25 22:25:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-25 22:25:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 38 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-11-25 22:25:09,892 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 10 [2022-11-25 22:25:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:09,893 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-11-25 22:25:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-11-25 22:25:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:25:09,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:09,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:09,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:10,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:10,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:10,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2000447915, now seen corresponding path program 1 times [2022-11-25 22:25:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:10,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260935806] [2022-11-25 22:25:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:10,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:10,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260935806] [2022-11-25 22:25:10,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260935806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:10,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519105896] [2022-11-25 22:25:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:10,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:10,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:10,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:10,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:25:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:10,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:10,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:10,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:10,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519105896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:10,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896211183] [2022-11-25 22:25:10,371 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:25:10,372 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:10,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:10,372 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:10,372 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:10,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,413 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:10,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:10,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:10,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:10,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:10,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:10,680 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-25 22:25:10,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-25 22:25:10,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:10,808 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:10,826 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:11,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1896211183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:11,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:11,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 18 [2022-11-25 22:25:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977174551] [2022-11-25 22:25:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:11,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 22:25:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 22:25:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-25 22:25:11,297 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:11,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:11,598 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-11-25 22:25:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:25:11,599 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 22:25:11,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:11,600 INFO L225 Difference]: With dead ends: 47 [2022-11-25 22:25:11,600 INFO L226 Difference]: Without dead ends: 45 [2022-11-25 22:25:11,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-25 22:25:11,601 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:11,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 99 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:25:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-25 22:25:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-25 22:25:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-11-25 22:25:11,608 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2022-11-25 22:25:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:11,608 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-11-25 22:25:11,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-25 22:25:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:25:11,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:11,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:11,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:11,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:11,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:11,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2006173553, now seen corresponding path program 1 times [2022-11-25 22:25:11,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:11,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138160757] [2022-11-25 22:25:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:11,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:11,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138160757] [2022-11-25 22:25:11,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138160757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955353834] [2022-11-25 22:25:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:11,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:11,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:11,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:11,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:25:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:11,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:11,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:11,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:12,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955353834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:12,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1800736337] [2022-11-25 22:25:12,019 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:25:12,019 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:12,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:12,019 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:12,020 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:12,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:12,041 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:25:12,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:25:12,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:12,064 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:12,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:12,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:12,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:12,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:12,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-25 22:25:12,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:12,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:12,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:12,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:12,237 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-25 22:25:12,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 211 [2022-11-25 22:25:12,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:12,323 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:12,342 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:12,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1800736337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:12,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:12,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 18 [2022-11-25 22:25:12,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075304597] [2022-11-25 22:25:12,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:12,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 22:25:12,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 22:25:12,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-25 22:25:12,785 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:13,177 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-11-25 22:25:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:25:13,178 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 22:25:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:13,179 INFO L225 Difference]: With dead ends: 50 [2022-11-25 22:25:13,179 INFO L226 Difference]: Without dead ends: 48 [2022-11-25 22:25:13,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-25 22:25:13,180 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:13,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 107 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:25:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-25 22:25:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-11-25 22:25:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-11-25 22:25:13,187 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2022-11-25 22:25:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:13,187 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-11-25 22:25:13,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:13,188 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-25 22:25:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:25:13,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:13,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:13,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:13,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 22:25:13,394 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1249859482, now seen corresponding path program 1 times [2022-11-25 22:25:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:13,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854747985] [2022-11-25 22:25:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:25:13,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854747985] [2022-11-25 22:25:13,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854747985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683759336] [2022-11-25 22:25:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:13,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:13,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:13,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:13,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:25:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:13,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:25:13,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:25:13,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683759336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:13,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53746265] [2022-11-25 22:25:13,561 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 22:25:13,561 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:13,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:13,562 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:13,562 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:13,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:13,588 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:13,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:13,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:13,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:13,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:13,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:13,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:13,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-25 22:25:13,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:13,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:13,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:13,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:13,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:13,793 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-25 22:25:13,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-25 22:25:13,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:13,889 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:14,144 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:15,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [53746265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:15,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:15,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 19 [2022-11-25 22:25:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052728819] [2022-11-25 22:25:15,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:25:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:25:15,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-25 22:25:15,385 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:15,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:15,713 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2022-11-25 22:25:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:25:15,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 22:25:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:15,717 INFO L225 Difference]: With dead ends: 64 [2022-11-25 22:25:15,717 INFO L226 Difference]: Without dead ends: 61 [2022-11-25 22:25:15,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-11-25 22:25:15,722 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 46 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:15,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 80 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:25:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-25 22:25:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2022-11-25 22:25:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 48 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-11-25 22:25:15,731 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 17 [2022-11-25 22:25:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:15,732 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-11-25 22:25:15,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-11-25 22:25:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:25:15,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:15,733 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:15,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:15,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 22:25:15,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:15,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1249859674, now seen corresponding path program 1 times [2022-11-25 22:25:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:15,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774333304] [2022-11-25 22:25:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:15,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:25:15,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:15,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774333304] [2022-11-25 22:25:15,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774333304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:15,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545168219] [2022-11-25 22:25:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:15,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:15,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:15,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:15,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:25:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:16,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:16,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:25:16,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:25:16,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545168219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:16,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941433760] [2022-11-25 22:25:16,120 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-25 22:25:16,120 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:16,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:16,121 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:16,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:16,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,143 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:25:16,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:25:16,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,167 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:16,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:16,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:16,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:16,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:16,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:16,341 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-25 22:25:16,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-25 22:25:16,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:16,432 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:16,638 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:17,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1941433760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:17,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:17,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4, 4] total 20 [2022-11-25 22:25:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105503856] [2022-11-25 22:25:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:17,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 22:25:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 22:25:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-11-25 22:25:17,415 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:17,735 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-11-25 22:25:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:25:17,739 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 22:25:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:17,740 INFO L225 Difference]: With dead ends: 58 [2022-11-25 22:25:17,740 INFO L226 Difference]: Without dead ends: 57 [2022-11-25 22:25:17,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-11-25 22:25:17,741 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:17,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 65 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:25:17,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-25 22:25:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2022-11-25 22:25:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 49 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-11-25 22:25:17,749 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 17 [2022-11-25 22:25:17,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:17,750 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-11-25 22:25:17,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-11-25 22:25:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:25:17,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:17,751 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:17,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 22:25:17,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:17,956 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:17,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1892049504, now seen corresponding path program 1 times [2022-11-25 22:25:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:17,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340053679] [2022-11-25 22:25:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:17,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:25:18,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:18,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340053679] [2022-11-25 22:25:18,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340053679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:18,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778837014] [2022-11-25 22:25:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:18,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:18,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:18,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:25:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:18,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:18,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:25:18,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:25:18,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778837014] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:18,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1086095903] [2022-11-25 22:25:18,150 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-25 22:25:18,151 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:18,151 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:18,151 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:18,152 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:18,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,181 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:18,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:18,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:18,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:18,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-25 22:25:18,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:18,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:18,350 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-11-25 22:25:18,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 237 treesize of output 218 [2022-11-25 22:25:18,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:18,408 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:18,677 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:20,233 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1811#(and (< sep_~i~0 5) (<= 0 |sep_#in~x.base|) (<= 1 sep_~i~0) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= (ite (and (< (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 0) (not (= (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2) 0))) (+ (- 2) (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2)) (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2)) 0) (= |#NULL.offset| 0) (not (<= 0 (+ 9223372036854775809 |sep_#t~post3|))) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:25:20,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:25:20,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:20,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-25 22:25:20,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905242767] [2022-11-25 22:25:20,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:20,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:25:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:20,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:25:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-11-25 22:25:20,235 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:20,310 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-11-25 22:25:20,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:25:20,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 22:25:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:20,311 INFO L225 Difference]: With dead ends: 107 [2022-11-25 22:25:20,311 INFO L226 Difference]: Without dead ends: 59 [2022-11-25 22:25:20,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-11-25 22:25:20,317 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:20,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 194 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-25 22:25:20,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-25 22:25:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-11-25 22:25:20,333 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 17 [2022-11-25 22:25:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:20,333 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-11-25 22:25:20,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-11-25 22:25:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 22:25:20,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:20,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:20,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:20,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:20,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:20,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash 50416128, now seen corresponding path program 2 times [2022-11-25 22:25:20,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:20,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729126206] [2022-11-25 22:25:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:25:20,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:20,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729126206] [2022-11-25 22:25:20,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729126206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:20,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663681968] [2022-11-25 22:25:20,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:25:20,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:20,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:20,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:25:20,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 22:25:20,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:25:20,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:20,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:25:20,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:20,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663681968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:20,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:25:20,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-25 22:25:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755807650] [2022-11-25 22:25:20,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:20,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:25:20,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:25:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:25:20,739 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:20,799 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-11-25 22:25:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:25:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-25 22:25:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:20,801 INFO L225 Difference]: With dead ends: 59 [2022-11-25 22:25:20,801 INFO L226 Difference]: Without dead ends: 58 [2022-11-25 22:25:20,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:25:20,802 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:20,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 93 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-25 22:25:20,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-25 22:25:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 54 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-11-25 22:25:20,810 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 23 [2022-11-25 22:25:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:20,810 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-11-25 22:25:20,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-11-25 22:25:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 22:25:20,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:20,812 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:20,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:21,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:21,017 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:21,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash 50416320, now seen corresponding path program 1 times [2022-11-25 22:25:21,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:21,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900678176] [2022-11-25 22:25:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:25:21,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:21,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900678176] [2022-11-25 22:25:21,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900678176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:21,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508079653] [2022-11-25 22:25:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:21,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:21,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:21,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:21,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:25:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:21,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:25:21,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:25:21,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:25:21,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508079653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:21,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911661544] [2022-11-25 22:25:21,317 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 22:25:21,317 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:21,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:21,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:21,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,344 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:25:21,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:25:21,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,375 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:21,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:21,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:21,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:21,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:21,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:21,532 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-25 22:25:21,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-25 22:25:21,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:21,628 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:21,760 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:22,402 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2393#(and (not (<= 0 (+ 9223372036854775807 |sep_#t~post4|))) (<= 0 |sep_#in~x.base|) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:25:22,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:25:22,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:22,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2022-11-25 22:25:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470727036] [2022-11-25 22:25:22,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:22,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 22:25:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 22:25:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-11-25 22:25:22,404 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:22,594 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2022-11-25 22:25:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 22:25:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-25 22:25:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:22,596 INFO L225 Difference]: With dead ends: 120 [2022-11-25 22:25:22,596 INFO L226 Difference]: Without dead ends: 73 [2022-11-25 22:25:22,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-11-25 22:25:22,598 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:22,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 292 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-25 22:25:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-11-25 22:25:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 62 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2022-11-25 22:25:22,607 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 23 [2022-11-25 22:25:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:22,607 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2022-11-25 22:25:22,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2022-11-25 22:25:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 22:25:22,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:22,609 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:22,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:22,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 22:25:22,814 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash 793570509, now seen corresponding path program 1 times [2022-11-25 22:25:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:22,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457133660] [2022-11-25 22:25:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:22,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:22,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457133660] [2022-11-25 22:25:22,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457133660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:22,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192349006] [2022-11-25 22:25:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:22,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:22,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:22,895 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:22,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 22:25:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:22,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:25:22,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:23,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:23,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192349006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:23,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1165352230] [2022-11-25 22:25:23,047 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 22:25:23,047 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:23,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:23,048 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:23,048 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:23,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,073 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:23,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:23,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:23,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:23,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:23,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:23,226 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-25 22:25:23,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-11-25 22:25:23,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:23,334 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:23,514 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:24,264 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2826#(and (<= 0 |sep_#in~x.base|) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (< 9223372036854775806 |sep_#t~post3|) (= |#NULL.offset| 0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:25:24,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:25:24,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:24,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 22:25:24,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24256983] [2022-11-25 22:25:24,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:24,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:25:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:24,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:25:24,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-11-25 22:25:24,267 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:24,399 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2022-11-25 22:25:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:25:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-25 22:25:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:24,401 INFO L225 Difference]: With dead ends: 100 [2022-11-25 22:25:24,401 INFO L226 Difference]: Without dead ends: 99 [2022-11-25 22:25:24,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-11-25 22:25:24,402 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 29 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:24,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 193 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-25 22:25:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2022-11-25 22:25:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 74 states have (on average 1.337837837837838) internal successors, (99), 83 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2022-11-25 22:25:24,414 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 30 [2022-11-25 22:25:24,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:24,414 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2022-11-25 22:25:24,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2022-11-25 22:25:24,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 22:25:24,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:24,416 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:24,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:24,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 22:25:24,621 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash 793576467, now seen corresponding path program 1 times [2022-11-25 22:25:24,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:24,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876874760] [2022-11-25 22:25:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:24,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:24,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876874760] [2022-11-25 22:25:24,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876874760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:24,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927045484] [2022-11-25 22:25:24,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:24,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:24,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:24,723 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:24,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 22:25:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:24,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:25:24,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:24,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:24,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927045484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:24,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1207144840] [2022-11-25 22:25:24,872 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-25 22:25:24,873 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:24,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:24,873 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:24,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:24,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:24,893 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:25:24,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:25:24,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:24,916 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:24,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:24,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:24,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:24,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:24,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:24,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:25,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:25,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:25,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:25,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:25,070 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-25 22:25:25,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-11-25 22:25:25,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:25,149 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:25,303 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:26,158 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3253#(and (<= 0 |sep_#in~x.base|) (< 9223372036854775808 |sep_#t~post4|) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:25:26,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:25:26,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:26,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 22:25:26,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932747200] [2022-11-25 22:25:26,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:26,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:25:26,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:25:26,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-11-25 22:25:26,161 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:26,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:26,352 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2022-11-25 22:25:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 22:25:26,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-25 22:25:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:26,353 INFO L225 Difference]: With dead ends: 117 [2022-11-25 22:25:26,353 INFO L226 Difference]: Without dead ends: 115 [2022-11-25 22:25:26,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-11-25 22:25:26,355 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 62 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:26,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 205 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-25 22:25:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2022-11-25 22:25:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.3707865168539326) internal successors, (122), 97 states have internal predecessors, (122), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2022-11-25 22:25:26,369 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 30 [2022-11-25 22:25:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:26,369 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2022-11-25 22:25:26,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:26,370 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2022-11-25 22:25:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 22:25:26,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:26,371 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:26,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:26,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 22:25:26,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1877190347, now seen corresponding path program 1 times [2022-11-25 22:25:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:26,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277887507] [2022-11-25 22:25:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:26,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:26,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277887507] [2022-11-25 22:25:26,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277887507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:26,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068411174] [2022-11-25 22:25:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:26,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:26,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:26,706 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:26,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 22:25:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:26,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:25:26,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:26,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:26,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068411174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:26,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:25:26,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-25 22:25:26,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332229924] [2022-11-25 22:25:26,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:26,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:25:26,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:26,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:25:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:25:26,823 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:26,878 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2022-11-25 22:25:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:25:26,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-25 22:25:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:26,880 INFO L225 Difference]: With dead ends: 101 [2022-11-25 22:25:26,880 INFO L226 Difference]: Without dead ends: 100 [2022-11-25 22:25:26,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:25:26,881 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 16 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:26,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 136 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-25 22:25:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-25 22:25:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 96 states have internal predecessors, (119), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2022-11-25 22:25:26,894 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 32 [2022-11-25 22:25:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:26,894 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2022-11-25 22:25:26,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2022-11-25 22:25:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 22:25:26,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:26,896 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:26,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:27,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 22:25:27,101 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:27,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:27,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1936641502, now seen corresponding path program 1 times [2022-11-25 22:25:27,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:27,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887189594] [2022-11-25 22:25:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 22:25:27,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:27,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887189594] [2022-11-25 22:25:27,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887189594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:27,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:27,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:25:27,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055893713] [2022-11-25 22:25:27,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:27,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:25:27,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:25:27,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:25:27,153 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:27,182 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2022-11-25 22:25:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:25:27,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-25 22:25:27,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:27,184 INFO L225 Difference]: With dead ends: 100 [2022-11-25 22:25:27,184 INFO L226 Difference]: Without dead ends: 99 [2022-11-25 22:25:27,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:25:27,185 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:27,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 69 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-25 22:25:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-25 22:25:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 89 states have (on average 1.303370786516854) internal successors, (116), 95 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2022-11-25 22:25:27,194 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 33 [2022-11-25 22:25:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:27,195 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2022-11-25 22:25:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2022-11-25 22:25:27,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 22:25:27,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:27,196 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:27,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 22:25:27,197 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash 191394532, now seen corresponding path program 1 times [2022-11-25 22:25:27,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:27,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486883511] [2022-11-25 22:25:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:27,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:27,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486883511] [2022-11-25 22:25:27,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486883511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:27,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970471175] [2022-11-25 22:25:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:27,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:27,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:27,303 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:27,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 22:25:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:27,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:25:27,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:27,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:27,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970471175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1799138593] [2022-11-25 22:25:27,488 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-25 22:25:27,489 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:27,489 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:27,489 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:27,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:27,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:27,511 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:27,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:27,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:27,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:27,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:27,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:27,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:27,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-25 22:25:27,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:27,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:27,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:27,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:27,656 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-25 22:25:27,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 211 [2022-11-25 22:25:27,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:27,716 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:28,023 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:29,044 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4355#(and (not (<= 0 (+ 9223372036854775807 |sep_#t~post4|))) (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:25:29,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:25:29,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:29,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-25 22:25:29,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593769470] [2022-11-25 22:25:29,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:29,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 22:25:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 22:25:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-11-25 22:25:29,046 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:29,333 INFO L93 Difference]: Finished difference Result 184 states and 235 transitions. [2022-11-25 22:25:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 22:25:29,334 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-25 22:25:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:29,336 INFO L225 Difference]: With dead ends: 184 [2022-11-25 22:25:29,336 INFO L226 Difference]: Without dead ends: 183 [2022-11-25 22:25:29,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 22:25:29,338 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:29,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 219 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-25 22:25:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 150. [2022-11-25 22:25:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 140 states have (on average 1.3) internal successors, (182), 146 states have internal predecessors, (182), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 187 transitions. [2022-11-25 22:25:29,355 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 187 transitions. Word has length 36 [2022-11-25 22:25:29,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:29,357 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 187 transitions. [2022-11-25 22:25:29,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:29,357 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 187 transitions. [2022-11-25 22:25:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 22:25:29,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:29,362 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:29,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:29,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 22:25:29,567 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:29,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:29,568 INFO L85 PathProgramCache]: Analyzing trace with hash 127297935, now seen corresponding path program 1 times [2022-11-25 22:25:29,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:29,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51027587] [2022-11-25 22:25:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:29,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:29,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:29,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51027587] [2022-11-25 22:25:29,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51027587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:29,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062069324] [2022-11-25 22:25:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:29,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:29,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:29,677 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:29,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 22:25:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:29,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:25:29,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:29,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:29,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062069324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:29,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [501259154] [2022-11-25 22:25:29,863 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-25 22:25:29,863 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:29,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:29,864 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:29,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:29,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:29,888 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:29,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:29,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:29,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:29,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:29,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:29,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:29,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:29,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:30,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:30,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:30,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:30,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:30,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:30,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:30,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:30,059 INFO L321 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-11-25 22:25:30,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 216 [2022-11-25 22:25:30,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:30,159 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:30,331 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:31,384 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5012#(and (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (< 9223372036854775806 |sep_#t~post3|) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:25:31,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:25:31,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:31,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-25 22:25:31,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427345824] [2022-11-25 22:25:31,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:31,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 22:25:31,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:31,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 22:25:31,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2022-11-25 22:25:31,386 INFO L87 Difference]: Start difference. First operand 150 states and 187 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:31,685 INFO L93 Difference]: Finished difference Result 269 states and 342 transitions. [2022-11-25 22:25:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 22:25:31,686 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-25 22:25:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:31,688 INFO L225 Difference]: With dead ends: 269 [2022-11-25 22:25:31,688 INFO L226 Difference]: Without dead ends: 268 [2022-11-25 22:25:31,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 22:25:31,689 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 40 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:31,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 286 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-25 22:25:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 194. [2022-11-25 22:25:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.2880434782608696) internal successors, (237), 190 states have internal predecessors, (237), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 242 transitions. [2022-11-25 22:25:31,705 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 242 transitions. Word has length 37 [2022-11-25 22:25:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:31,705 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 242 transitions. [2022-11-25 22:25:31,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 242 transitions. [2022-11-25 22:25:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 22:25:31,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:31,709 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:31,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:31,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 22:25:31,914 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:31,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1431624943, now seen corresponding path program 1 times [2022-11-25 22:25:31,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:31,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215823817] [2022-11-25 22:25:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:32,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:32,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215823817] [2022-11-25 22:25:32,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215823817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:32,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040895242] [2022-11-25 22:25:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:32,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:32,040 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:32,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 22:25:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:32,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:25:32,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-25 22:25:32,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:32,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040895242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:32,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:25:32,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:25:32,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116879246] [2022-11-25 22:25:32,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:32,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:25:32,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:32,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:25:32,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:25:32,141 INFO L87 Difference]: Start difference. First operand 194 states and 242 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:25:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:32,176 INFO L93 Difference]: Finished difference Result 202 states and 252 transitions. [2022-11-25 22:25:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:25:32,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-25 22:25:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:32,178 INFO L225 Difference]: With dead ends: 202 [2022-11-25 22:25:32,178 INFO L226 Difference]: Without dead ends: 201 [2022-11-25 22:25:32,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:25:32,180 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:32,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 51 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-25 22:25:32,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 196. [2022-11-25 22:25:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 186 states have (on average 1.2903225806451613) internal successors, (240), 192 states have internal predecessors, (240), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 245 transitions. [2022-11-25 22:25:32,195 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 245 transitions. Word has length 43 [2022-11-25 22:25:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:32,195 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 245 transitions. [2022-11-25 22:25:32,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:25:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 245 transitions. [2022-11-25 22:25:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 22:25:32,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:32,197 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:32,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:32,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:32,402 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:32,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:32,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1430700338, now seen corresponding path program 1 times [2022-11-25 22:25:32,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:32,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093675080] [2022-11-25 22:25:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:32,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:32,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:32,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093675080] [2022-11-25 22:25:32,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093675080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:32,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734372436] [2022-11-25 22:25:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:32,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:32,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:32,485 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:32,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 22:25:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:32,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:25:32,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-25 22:25:32,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:32,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734372436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:32,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:25:32,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:25:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776949180] [2022-11-25 22:25:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:32,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:25:32,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:25:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:25:32,588 INFO L87 Difference]: Start difference. First operand 196 states and 245 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:25:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:32,619 INFO L93 Difference]: Finished difference Result 366 states and 459 transitions. [2022-11-25 22:25:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:25:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-25 22:25:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:32,620 INFO L225 Difference]: With dead ends: 366 [2022-11-25 22:25:32,621 INFO L226 Difference]: Without dead ends: 201 [2022-11-25 22:25:32,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:25:32,622 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:32,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 52 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-25 22:25:32,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2022-11-25 22:25:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 187 states have (on average 1.2834224598930482) internal successors, (240), 193 states have internal predecessors, (240), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 245 transitions. [2022-11-25 22:25:32,642 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 245 transitions. Word has length 44 [2022-11-25 22:25:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:32,642 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 245 transitions. [2022-11-25 22:25:32,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:25:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 245 transitions. [2022-11-25 22:25:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 22:25:32,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:32,644 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 22:25:32,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:32,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:32,849 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash 333463712, now seen corresponding path program 2 times [2022-11-25 22:25:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:32,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22630165] [2022-11-25 22:25:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:32,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:33,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:33,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22630165] [2022-11-25 22:25:33,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22630165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:33,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299787308] [2022-11-25 22:25:33,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:25:33,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:33,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:33,010 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:33,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-25 22:25:33,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 22:25:33,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:25:33,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:25:33,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:33,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:25:33,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299787308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:33,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [766272568] [2022-11-25 22:25:33,278 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 22:25:33,278 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:33,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:33,279 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:33,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:33,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,304 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:25:33,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:25:33,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,326 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:33,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:33,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:33,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:33,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:33,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:33,474 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-25 22:25:33,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 206 [2022-11-25 22:25:33,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:33,549 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:33,665 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:34,410 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7238#(and (not (<= 0 (+ 9223372036854775807 |sep_#t~post4|))) (<= 0 |sep_#in~x.base|) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:25:34,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:25:34,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:34,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-25 22:25:34,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449912407] [2022-11-25 22:25:34,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:34,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 22:25:34,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 22:25:34,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-11-25 22:25:34,413 INFO L87 Difference]: Start difference. First operand 197 states and 245 transitions. Second operand has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:34,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:34,644 INFO L93 Difference]: Finished difference Result 263 states and 334 transitions. [2022-11-25 22:25:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 22:25:34,645 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-25 22:25:34,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:34,647 INFO L225 Difference]: With dead ends: 263 [2022-11-25 22:25:34,647 INFO L226 Difference]: Without dead ends: 262 [2022-11-25 22:25:34,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=269, Invalid=1213, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 22:25:34,654 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:34,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 269 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-25 22:25:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 239. [2022-11-25 22:25:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 229 states have (on average 1.2838427947598254) internal successors, (294), 235 states have internal predecessors, (294), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 299 transitions. [2022-11-25 22:25:34,674 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 299 transitions. Word has length 43 [2022-11-25 22:25:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:34,674 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 299 transitions. [2022-11-25 22:25:34,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 299 transitions. [2022-11-25 22:25:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 22:25:34,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:34,675 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:34,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:34,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:34,880 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1402039540, now seen corresponding path program 1 times [2022-11-25 22:25:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:34,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549796314] [2022-11-25 22:25:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:34,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:34,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549796314] [2022-11-25 22:25:34,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549796314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:34,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174025567] [2022-11-25 22:25:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:34,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:34,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:34,976 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:34,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-25 22:25:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:35,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:35,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:35,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:25:35,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174025567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:35,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [600374534] [2022-11-25 22:25:35,148 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-25 22:25:35,149 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:35,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:35,150 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:35,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:35,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,173 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:25:35,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:25:35,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,196 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:35,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:35,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:35,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:35,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,354 INFO L321 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-11-25 22:25:35,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 216 [2022-11-25 22:25:35,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:35,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-25 22:25:35,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:35,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:35,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-25 22:25:35,707 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:35,857 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:41,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [600374534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:41,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:41,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5, 5] total 25 [2022-11-25 22:25:41,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092647833] [2022-11-25 22:25:41,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:41,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 22:25:41,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:41,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 22:25:41,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-11-25 22:25:41,058 INFO L87 Difference]: Start difference. First operand 239 states and 299 transitions. Second operand has 17 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:41,882 INFO L93 Difference]: Finished difference Result 259 states and 322 transitions. [2022-11-25 22:25:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 22:25:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-25 22:25:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:41,884 INFO L225 Difference]: With dead ends: 259 [2022-11-25 22:25:41,884 INFO L226 Difference]: Without dead ends: 257 [2022-11-25 22:25:41,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-11-25 22:25:41,885 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:41,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 81 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:25:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-25 22:25:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 241. [2022-11-25 22:25:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 231 states have (on average 1.2813852813852813) internal successors, (296), 237 states have internal predecessors, (296), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 301 transitions. [2022-11-25 22:25:41,904 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 301 transitions. Word has length 45 [2022-11-25 22:25:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:41,904 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 301 transitions. [2022-11-25 22:25:41,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:41,904 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 301 transitions. [2022-11-25 22:25:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 22:25:41,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:41,905 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:41,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:42,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 22:25:42,111 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash -396947275, now seen corresponding path program 1 times [2022-11-25 22:25:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:42,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363651467] [2022-11-25 22:25:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 22:25:42,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:42,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363651467] [2022-11-25 22:25:42,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363651467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:42,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477600076] [2022-11-25 22:25:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:42,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:42,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:42,186 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:42,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 22:25:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:42,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:42,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 22:25:42,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 22:25:42,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477600076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:42,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1561576752] [2022-11-25 22:25:42,356 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-25 22:25:42,357 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:42,357 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:42,357 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:42,358 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:42,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,387 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:42,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:42,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:25:42,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:42,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:25:42,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:42,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,536 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-25 22:25:42,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-11-25 22:25:42,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:42,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-25 22:25:42,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:42,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-25 22:25:42,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:42,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-25 22:25:42,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:42,955 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-11-25 22:25:42,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-11-25 22:25:43,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-25 22:25:43,081 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:43,225 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:25:48,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1561576752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:48,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:25:48,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [5, 5, 5] total 26 [2022-11-25 22:25:48,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952014883] [2022-11-25 22:25:48,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:48,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 22:25:48,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:48,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 22:25:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=555, Unknown=2, NotChecked=0, Total=650 [2022-11-25 22:25:48,841 INFO L87 Difference]: Start difference. First operand 241 states and 301 transitions. Second operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:51,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:25:53,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:25:55,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:25:57,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:25:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:57,676 INFO L93 Difference]: Finished difference Result 257 states and 320 transitions. [2022-11-25 22:25:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 22:25:57,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2022-11-25 22:25:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:57,678 INFO L225 Difference]: With dead ends: 257 [2022-11-25 22:25:57,678 INFO L226 Difference]: Without dead ends: 254 [2022-11-25 22:25:57,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=134, Invalid=856, Unknown=2, NotChecked=0, Total=992 [2022-11-25 22:25:57,679 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:57,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 44 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 282 Invalid, 4 Unknown, 0 Unchecked, 8.4s Time] [2022-11-25 22:25:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-25 22:25:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2022-11-25 22:25:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 231 states have (on average 1.2683982683982684) internal successors, (293), 234 states have internal predecessors, (293), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:57,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 298 transitions. [2022-11-25 22:25:57,697 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 298 transitions. Word has length 48 [2022-11-25 22:25:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:57,697 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 298 transitions. [2022-11-25 22:25:57,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:25:57,698 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 298 transitions. [2022-11-25 22:25:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 22:25:57,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:57,699 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:57,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:57,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:57,904 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:25:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:57,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1411178419, now seen corresponding path program 1 times [2022-11-25 22:25:57,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:57,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116884217] [2022-11-25 22:25:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:57,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-25 22:25:57,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:57,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116884217] [2022-11-25 22:25:57,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116884217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:57,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713466688] [2022-11-25 22:25:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:57,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:57,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:57,995 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:58,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-25 22:25:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:58,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:25:58,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-25 22:25:58,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-25 22:25:58,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713466688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1590851265] [2022-11-25 22:25:58,172 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-25 22:25:58,173 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:58,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:58,173 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:58,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:58,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,201 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:25:58,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:25:58,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,229 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:58,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:58,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:25:58,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-25 22:25:58,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:58,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,380 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-25 22:25:58,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-25 22:25:58,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:25:58,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-25 22:25:58,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:58,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-25 22:25:58,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:58,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-25 22:25:58,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,782 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-11-25 22:25:58,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-11-25 22:25:58,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-25 22:25:58,912 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:25:59,057 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:26:04,864 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9929#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post12#1|) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 5 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:26:04,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:26:04,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:26:04,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 22:26:04,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345778991] [2022-11-25 22:26:04,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:26:04,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:26:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:04,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:26:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=601, Unknown=2, NotChecked=0, Total=702 [2022-11-25 22:26:04,866 INFO L87 Difference]: Start difference. First operand 238 states and 298 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 22:26:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:04,950 INFO L93 Difference]: Finished difference Result 470 states and 592 transitions. [2022-11-25 22:26:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:26:04,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-11-25 22:26:04,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:04,952 INFO L225 Difference]: With dead ends: 470 [2022-11-25 22:26:04,952 INFO L226 Difference]: Without dead ends: 250 [2022-11-25 22:26:04,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=116, Invalid=694, Unknown=2, NotChecked=0, Total=812 [2022-11-25 22:26:04,953 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:04,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 128 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:26:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-25 22:26:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-11-25 22:26:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 243 states have (on average 1.2386831275720165) internal successors, (301), 246 states have internal predecessors, (301), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 306 transitions. [2022-11-25 22:26:04,972 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 306 transitions. Word has length 51 [2022-11-25 22:26:04,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:04,972 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 306 transitions. [2022-11-25 22:26:04,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 22:26:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 306 transitions. [2022-11-25 22:26:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 22:26:04,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:04,974 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:04,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:05,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 22:26:05,184 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:26:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:05,184 INFO L85 PathProgramCache]: Analyzing trace with hash 571561688, now seen corresponding path program 2 times [2022-11-25 22:26:05,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:05,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236257513] [2022-11-25 22:26:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 22:26:05,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:05,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236257513] [2022-11-25 22:26:05,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236257513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:05,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685285597] [2022-11-25 22:26:05,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:26:05,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:05,365 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:05,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-25 22:26:05,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 22:26:05,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:26:05,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 22:26:05,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-25 22:26:05,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:26:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-25 22:26:05,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685285597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:26:05,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1787198768] [2022-11-25 22:26:05,657 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-25 22:26:05,657 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:26:05,659 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:26:05,660 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:26:05,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:26:05,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:05,692 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:26:05,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:26:05,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:05,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:26:05,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:05,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:26:05,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:05,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-25 22:26:05,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:05,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:05,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:05,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:05,847 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-25 22:26:05,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 211 [2022-11-25 22:26:05,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:26:05,906 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:26:06,100 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:26:07,315 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11096#(and (not (<= 0 (+ 9223372036854775807 |sep_#t~post4|))) (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:26:07,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:26:07,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:26:07,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-25 22:26:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840755468] [2022-11-25 22:26:07,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:26:07,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 22:26:07,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 22:26:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2022-11-25 22:26:07,318 INFO L87 Difference]: Start difference. First operand 250 states and 306 transitions. Second operand has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:07,713 INFO L93 Difference]: Finished difference Result 485 states and 611 transitions. [2022-11-25 22:26:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 22:26:07,713 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-25 22:26:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:07,715 INFO L225 Difference]: With dead ends: 485 [2022-11-25 22:26:07,716 INFO L226 Difference]: Without dead ends: 484 [2022-11-25 22:26:07,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=332, Invalid=1924, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 22:26:07,717 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 107 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:07,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 179 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:26:07,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-25 22:26:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 313. [2022-11-25 22:26:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 306 states have (on average 1.2483660130718954) internal successors, (382), 309 states have internal predecessors, (382), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 387 transitions. [2022-11-25 22:26:07,742 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 387 transitions. Word has length 50 [2022-11-25 22:26:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:07,742 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 387 transitions. [2022-11-25 22:26:07,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 387 transitions. [2022-11-25 22:26:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 22:26:07,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:07,744 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-25 22:26:07,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 22:26:07,949 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:26:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1147918263, now seen corresponding path program 2 times [2022-11-25 22:26:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:07,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024549293] [2022-11-25 22:26:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:26:08,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:08,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024549293] [2022-11-25 22:26:08,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024549293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:08,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721728432] [2022-11-25 22:26:08,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:26:08,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:08,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:08,145 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:08,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-25 22:26:08,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 22:26:08,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:26:08,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 22:26:08,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:26:08,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:26:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:26:08,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721728432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:26:08,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1290891831] [2022-11-25 22:26:08,499 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 22:26:08,499 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:26:08,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:26:08,499 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:26:08,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:26:08,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,526 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:26:08,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:26:08,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:26:08,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:26:08,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:26:08,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:26:08,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:08,673 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-25 22:26:08,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 206 [2022-11-25 22:26:08,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:26:08,749 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:26:08,890 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:26:09,977 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12381#(and (<= 0 |sep_#in~x.base|) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (< 9223372036854775806 |sep_#t~post3|) (= |#NULL.offset| 0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:26:09,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:26:09,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:26:09,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-25 22:26:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821285602] [2022-11-25 22:26:09,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:26:09,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 22:26:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 22:26:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 22:26:09,980 INFO L87 Difference]: Start difference. First operand 313 states and 387 transitions. Second operand has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 24 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:10,312 INFO L93 Difference]: Finished difference Result 381 states and 479 transitions. [2022-11-25 22:26:10,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 22:26:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 24 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 22:26:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:10,315 INFO L225 Difference]: With dead ends: 381 [2022-11-25 22:26:10,315 INFO L226 Difference]: Without dead ends: 380 [2022-11-25 22:26:10,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 121 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=366, Invalid=1526, Unknown=0, NotChecked=0, Total=1892 [2022-11-25 22:26:10,317 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:10,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 244 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:26:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-25 22:26:10,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 355. [2022-11-25 22:26:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 348 states have (on average 1.2528735632183907) internal successors, (436), 351 states have internal predecessors, (436), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 441 transitions. [2022-11-25 22:26:10,350 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 441 transitions. Word has length 51 [2022-11-25 22:26:10,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:10,350 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 441 transitions. [2022-11-25 22:26:10,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 24 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 441 transitions. [2022-11-25 22:26:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 22:26:10,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:10,351 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:10,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:10,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 22:26:10,557 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:26:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1580103235, now seen corresponding path program 2 times [2022-11-25 22:26:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:10,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988579553] [2022-11-25 22:26:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-25 22:26:10,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:10,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988579553] [2022-11-25 22:26:10,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988579553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:10,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453503556] [2022-11-25 22:26:10,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:26:10,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:10,710 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:10,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-25 22:26:10,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 22:26:10,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:26:10,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:26:10,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-25 22:26:10,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:10,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453503556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:10,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:26:10,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-25 22:26:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205204630] [2022-11-25 22:26:10,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:26:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:26:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-25 22:26:10,870 INFO L87 Difference]: Start difference. First operand 355 states and 441 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:10,963 INFO L93 Difference]: Finished difference Result 402 states and 501 transitions. [2022-11-25 22:26:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:26:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 22:26:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:10,967 INFO L225 Difference]: With dead ends: 402 [2022-11-25 22:26:10,967 INFO L226 Difference]: Without dead ends: 401 [2022-11-25 22:26:10,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:26:10,969 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:10,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 112 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:26:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-25 22:26:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 365. [2022-11-25 22:26:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 358 states have (on average 1.2569832402234637) internal successors, (450), 361 states have internal predecessors, (450), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 455 transitions. [2022-11-25 22:26:10,996 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 455 transitions. Word has length 51 [2022-11-25 22:26:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:10,997 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 455 transitions. [2022-11-25 22:26:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 455 transitions. [2022-11-25 22:26:10,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 22:26:10,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:10,998 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:11,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 22:26:11,203 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:26:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2014742333, now seen corresponding path program 3 times [2022-11-25 22:26:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:11,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690833757] [2022-11-25 22:26:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 22:26:11,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:11,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690833757] [2022-11-25 22:26:11,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690833757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:11,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833462045] [2022-11-25 22:26:11,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:26:11,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:11,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:11,362 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:11,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-25 22:26:11,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:26:11,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:26:11,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 22:26:11,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-25 22:26:11,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:26:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-25 22:26:11,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833462045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:26:11,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1073919114] [2022-11-25 22:26:11,652 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-25 22:26:11,652 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:26:11,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:26:11,653 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:26:11,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:26:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,677 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:26:11,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:26:11,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,698 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:26:11,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:26:11,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:26:11,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-25 22:26:11,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:26:11,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:11,848 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-25 22:26:11,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 206 [2022-11-25 22:26:11,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 22:26:11,927 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-25 22:26:12,094 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:26:13,230 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14632#(and (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (< 9223372036854775806 |sep_#t~post3|) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:26:13,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:26:13,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:26:13,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-25 22:26:13,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449877525] [2022-11-25 22:26:13,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:26:13,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 22:26:13,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 22:26:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-11-25 22:26:13,232 INFO L87 Difference]: Start difference. First operand 365 states and 455 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:13,630 INFO L93 Difference]: Finished difference Result 656 states and 830 transitions. [2022-11-25 22:26:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-25 22:26:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 22:26:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:13,633 INFO L225 Difference]: With dead ends: 656 [2022-11-25 22:26:13,633 INFO L226 Difference]: Without dead ends: 655 [2022-11-25 22:26:13,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=330, Invalid=1926, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 22:26:13,634 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 68 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:13,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 181 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:26:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-25 22:26:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 390. [2022-11-25 22:26:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 383 states have (on average 1.2558746736292428) internal successors, (481), 386 states have internal predecessors, (481), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 486 transitions. [2022-11-25 22:26:13,670 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 486 transitions. Word has length 51 [2022-11-25 22:26:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:13,670 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 486 transitions. [2022-11-25 22:26:13,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 486 transitions. [2022-11-25 22:26:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 22:26:13,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:13,672 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 22:26:13,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:13,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 22:26:13,877 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:26:13,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:13,877 INFO L85 PathProgramCache]: Analyzing trace with hash 126392606, now seen corresponding path program 3 times [2022-11-25 22:26:13,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:13,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934684442] [2022-11-25 22:26:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:13,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 72 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-25 22:26:14,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:14,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934684442] [2022-11-25 22:26:14,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934684442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:14,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817772643] [2022-11-25 22:26:14,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:26:14,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:14,119 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:14,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-25 22:26:14,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:26:14,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:26:14,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:26:14,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 22:26:14,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:14,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817772643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:14,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:26:14,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 22 [2022-11-25 22:26:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794680102] [2022-11-25 22:26:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 22:26:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 22:26:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-11-25 22:26:14,428 INFO L87 Difference]: Start difference. First operand 390 states and 486 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:14,600 INFO L93 Difference]: Finished difference Result 721 states and 890 transitions. [2022-11-25 22:26:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 22:26:14,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-25 22:26:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:14,603 INFO L225 Difference]: With dead ends: 721 [2022-11-25 22:26:14,603 INFO L226 Difference]: Without dead ends: 348 [2022-11-25 22:26:14,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-11-25 22:26:14,607 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:14,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 191 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:26:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-25 22:26:14,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 80. [2022-11-25 22:26:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.118421052631579) internal successors, (85), 76 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2022-11-25 22:26:14,623 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 64 [2022-11-25 22:26:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:14,624 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2022-11-25 22:26:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2022-11-25 22:26:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 22:26:14,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:14,625 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:14,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:14,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-25 22:26:14,836 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 22:26:14,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:14,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1254797837, now seen corresponding path program 2 times [2022-11-25 22:26:14,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:14,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091792979] [2022-11-25 22:26:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-25 22:26:14,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:14,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091792979] [2022-11-25 22:26:14,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091792979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:14,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:14,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:14,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649447354] [2022-11-25 22:26:14,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:14,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:26:14,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:26:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:26:14,911 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:26:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:14,944 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-11-25 22:26:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:26:14,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2022-11-25 22:26:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:14,945 INFO L225 Difference]: With dead ends: 80 [2022-11-25 22:26:14,945 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 22:26:14,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:26:14,946 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 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 22:26:14,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:26:14,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 22:26:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 22:26:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 22:26:14,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2022-11-25 22:26:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:14,949 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 22:26:14,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:26:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 22:26:14,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 22:26:14,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-25 22:26:14,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-25 22:26:14,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-25 22:26:14,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-25 22:26:14,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-25 22:26:14,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-25 22:26:14,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-25 22:26:14,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-25 22:26:14,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-25 22:26:14,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-25 22:26:14,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-25 22:26:14,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-25 22:26:14,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 22:26:14,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 22:26:20,560 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-25 22:26:20,560 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 5 |ULTIMATE.start_main_~i~1#1|) (exists ((v_sep_~ret~0_BEFORE_RETURN_1 Int)) (and (<= v_sep_~ret~0_BEFORE_RETURN_1 9223372036854775807) (= (let ((.cse0 (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) |ULTIMATE.start_main_~ret~1#1|) (<= 1 v_sep_~ret~0_BEFORE_RETURN_1))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 4 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-25 22:26:20,561 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-11-25 22:26:20,561 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-25 22:26:20,561 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 22:26:20,561 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-25 22:26:20,561 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-11-25 22:26:20,561 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-11-25 22:26:20,561 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-11-25 22:26:20,562 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-25 22:26:20,562 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 22:26:20,562 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse3 (<= 1 |ULTIMATE.start_main_~i~1#1|))) (and (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse2 (<= |#NULL.offset| 0)) (.cse4 (<= |#NULL.base| 0)) (.cse5 (<= 0 |#NULL.offset|)) (.cse6 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~i~1#1| 2147483647) .cse3 .cse4 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) .cse5 .cse6 (<= 0 |#StackHeapBarrier|)) (and .cse0 (<= 0 |ULTIMATE.start_main_~i~1#1|) .cse1 .cse2 (<= |ULTIMATE.start_main_~i~1#1| 0) .cse4 .cse5 .cse6))) (or (let ((.cse7 (select |#memory_int| 1))) (and (= 2 (select |#length| 1)) (= (select |#valid| |ULTIMATE.start_main_~#x~0#1.base|) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse7 0) 48) (= 10 (select |#length| 2)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#x~0#1.base|) (= (select .cse7 1) 0) (< 0 |#StackHeapBarrier|) (= (select |#length| |ULTIMATE.start_main_~#x~0#1.base|) 20))) .cse3))) [2022-11-25 22:26:20,563 INFO L895 garLoopResultBuilder]: At program point L37-6(lines 37 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 5 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-25 22:26:20,563 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-25 22:26:20,563 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse3 (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648))) (.cse4 (<= |#NULL.offset| 0)) (.cse5 (<= |ULTIMATE.start_main_~ret~1#1| 2147483647)) (.cse6 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse7 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse8 (<= 5 |ULTIMATE.start_main_~i~1#1|)) (.cse9 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse10 (<= 0 |#NULL.offset|)) (.cse11 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse9 .cse10 .cse11))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 22:26:20,563 INFO L902 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: true [2022-11-25 22:26:20,563 INFO L899 garLoopResultBuilder]: For program point L46-3(line 46) no Hoare annotation was computed. [2022-11-25 22:26:20,564 INFO L899 garLoopResultBuilder]: For program point L46-4(line 46) no Hoare annotation was computed. [2022-11-25 22:26:20,564 INFO L895 garLoopResultBuilder]: At program point L46-5(lines 46 48) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse3 (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648))) (.cse4 (<= |#NULL.offset| 0)) (.cse5 (<= |ULTIMATE.start_main_~ret~1#1| 2147483647)) (.cse6 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse7 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse8 (<= 5 |ULTIMATE.start_main_~i~1#1|)) (.cse9 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse10 (<= 0 |#NULL.offset|)) (.cse11 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse9 .cse10 .cse11))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-25 22:26:20,564 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-25 22:26:20,564 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-11-25 22:26:20,564 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-11-25 22:26:20,565 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-11-25 22:26:20,565 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-11-25 22:26:20,565 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-11-25 22:26:20,565 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-11-25 22:26:20,565 INFO L902 garLoopResultBuilder]: At program point sepENTRY(lines 15 26) the Hoare annotation is: true [2022-11-25 22:26:20,565 INFO L899 garLoopResultBuilder]: For program point sepEXIT(lines 15 26) no Hoare annotation was computed. [2022-11-25 22:26:20,566 INFO L899 garLoopResultBuilder]: For program point sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-25 22:26:20,566 INFO L899 garLoopResultBuilder]: For program point sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2022-11-25 22:26:20,566 INFO L899 garLoopResultBuilder]: For program point sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-25 22:26:20,566 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 23) no Hoare annotation was computed. [2022-11-25 22:26:20,566 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 18 24) no Hoare annotation was computed. [2022-11-25 22:26:20,566 INFO L899 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2022-11-25 22:26:20,566 INFO L899 garLoopResultBuilder]: For program point L18-4(line 18) no Hoare annotation was computed. [2022-11-25 22:26:20,567 INFO L895 garLoopResultBuilder]: At program point L18-5(lines 18 24) the Hoare annotation is: (let ((.cse0 (+ 9223372036854775808 sep_~ret~0)) (.cse15 (+ sep_~ret~0 1))) (let ((.cse8 (<= 1 sep_~ret~0)) (.cse6 (<= 0 sep_~x.base)) (.cse7 (<= 0 sep_~x.offset)) (.cse9 (<= sep_~x.offset 0)) (.cse11 (<= 0 sep_~ret~0)) (.cse3 (<= 5 sep_~i~0)) (.cse12 (<= 0 .cse15)) (.cse14 (<= .cse15 0)) (.cse5 (<= 2 sep_~i~0)) (.cse1 (< sep_~ret~0 9223372036854775806)) (.cse2 (<= 1 sep_~i~0)) (.cse4 (<= 0 .cse0)) (.cse10 (<= sep_~ret~0 1)) (.cse13 (<= 3 sep_~i~0))) (or (not (= |#NULL.offset| 0)) (and (< 0 .cse0) .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse7 .cse8 (<= sep_~ret~0 2) .cse9) (and (or (and (= sep_~ret~0 0) (= sep_~i~0 0) (= sep_~x.base |sep_#in~x.base|)) (and .cse2 .cse8)) .cse10 .cse6 .cse7 .cse9) (not (= |sep_#in~x.offset| 0)) (and .cse11 .cse5 (<= sep_~ret~0 0)) (and .cse11 (< sep_~ret~0 9223372036854775807) .cse3) (and .cse12 (< sep_~ret~0 9223372036854775805) .cse13) (and .cse14 .cse12 .cse2) (and .cse14 .cse5 (<= 0 (+ 2 sep_~ret~0))) (not (= |#NULL.base| 0)) (and .cse1 (<= 4 sep_~i~0) .cse2 (< 0 (+ 9223372036854775807 sep_~ret~0)) .cse4) (not (<= 0 |#StackHeapBarrier|)) (not (<= 0 |sep_#in~x.base|)) (and (< 0 (+ 9223372036854775806 sep_~ret~0)) .cse10 .cse13)))) [2022-11-25 22:26:20,567 INFO L899 garLoopResultBuilder]: For program point sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2022-11-25 22:26:20,567 INFO L899 garLoopResultBuilder]: For program point sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-25 22:26:20,567 INFO L899 garLoopResultBuilder]: For program point sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-25 22:26:20,571 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:20,573 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:26:20,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:26:20 BoogieIcfgContainer [2022-11-25 22:26:20,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:26:20,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:26:20,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:26:20,613 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:26:20,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:25:05" (3/4) ... [2022-11-25 22:26:20,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 22:26:20,622 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sep [2022-11-25 22:26:20,629 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-25 22:26:20,629 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-25 22:26:20,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 22:26:20,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 22:26:20,683 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 22:26:20,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:26:20,684 INFO L158 Benchmark]: Toolchain (without parser) took 76504.04ms. Allocated memory was 199.2MB in the beginning and 415.2MB in the end (delta: 216.0MB). Free memory was 166.6MB in the beginning and 324.3MB in the end (delta: -157.7MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2022-11-25 22:26:20,684 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 146.8MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:26:20,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.96ms. Allocated memory is still 199.2MB. Free memory was 166.6MB in the beginning and 156.3MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 22:26:20,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.65ms. Allocated memory is still 199.2MB. Free memory was 155.6MB in the beginning and 154.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:26:20,685 INFO L158 Benchmark]: Boogie Preprocessor took 59.78ms. Allocated memory is still 199.2MB. Free memory was 154.2MB in the beginning and 152.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:26:20,685 INFO L158 Benchmark]: RCFGBuilder took 535.84ms. Allocated memory is still 199.2MB. Free memory was 152.8MB in the beginning and 137.2MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 22:26:20,685 INFO L158 Benchmark]: TraceAbstraction took 75483.52ms. Allocated memory was 199.2MB in the beginning and 415.2MB in the end (delta: 216.0MB). Free memory was 136.7MB in the beginning and 327.4MB in the end (delta: -190.7MB). Peak memory consumption was 221.5MB. Max. memory is 16.1GB. [2022-11-25 22:26:20,685 INFO L158 Benchmark]: Witness Printer took 70.97ms. Allocated memory is still 415.2MB. Free memory was 327.4MB in the beginning and 324.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:26:20,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 146.8MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.96ms. Allocated memory is still 199.2MB. Free memory was 166.6MB in the beginning and 156.3MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.65ms. Allocated memory is still 199.2MB. Free memory was 155.6MB in the beginning and 154.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.78ms. Allocated memory is still 199.2MB. Free memory was 154.2MB in the beginning and 152.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 535.84ms. Allocated memory is still 199.2MB. Free memory was 152.8MB in the beginning and 137.2MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 75483.52ms. Allocated memory was 199.2MB in the beginning and 415.2MB in the end (delta: 216.0MB). Free memory was 136.7MB in the beginning and 327.4MB in the end (delta: -190.7MB). Peak memory consumption was 221.5MB. Max. memory is 16.1GB. * Witness Printer took 70.97ms. Allocated memory is still 415.2MB. Free memory was 327.4MB in the beginning and 324.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 75.4s, OverallIterations: 30, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 1092 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1068 mSDsluCounter, 4071 SdHoareTripleChecker+Invalid, 10.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3306 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3248 IncrementalHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 765 mSDtfsCounter, 3248 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2302 GetRequests, 1612 SyntacticMatches, 62 SemanticMatches, 628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6519 ImplicationChecksByTransitivity, 35.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=390occurred in iteration=28, InterpolantAutomatonStates: 345, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 30 MinimizatonAttempts, 991 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 44 PreInvPairs, 115 NumberOfFragments, 594 HoareAnnotationTreeSize, 44 FomulaSimplifications, 13423 FormulaSimplificationTreeSizeReduction, 3.7s HoareSimplificationTime, 8 FomulaSimplificationsInter, 17439 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1832 NumberOfCodeBlocks, 1791 NumberOfCodeBlocksAsserted, 72 NumberOfCheckSat, 2349 ConstructedInterpolants, 0 QuantifiedInterpolants, 4661 SizeOfPredicates, 53 NumberOfNonLiveVariables, 3596 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 75 InterpolantComputations, 11 PerfectInterpolantSequences, 2175/2984 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 4.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 16, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 128, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 356, TOOLS_POST_TIME: 3.6s, TOOLS_POST_CALL_APPLICATIONS: 18, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 382, TOOLS_QUANTIFIERELIM_TIME: 3.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 619, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 41, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 30, DOMAIN_WIDEN_TIME: 0.3s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 45, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 128, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 15, LOOP_SUMMARIZER_CACHE_MISSES: 15, LOOP_SUMMARIZER_OVERALL_TIME: 2.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 45, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1551, DAG_COMPRESSION_RETAINED_NODES: 416, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((0 <= #NULL && 0 <= x) && #NULL <= 0) && i <= 2147483647) && 1 <= i) && #NULL <= 0) && 0 <= x) && 0 <= #NULL) && x <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((0 <= #NULL && 0 <= i) && 0 <= x) && #NULL <= 0) && i <= 0) && #NULL <= 0) && 0 <= #NULL) && x <= 0)) && (((((((((((2 == unknown-#length-unknown[1] && \valid[x] == 1) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && 10 == unknown-#length-unknown[2]) && unknown-#StackHeapBarrier-unknown < x) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#length-unknown[x] == 20) || 1 <= i) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((1 <= i || unknown-#memory_int-unknown[x][x] == temp) && (((((((((((((ret2 <= 2147483647 && i <= 0) && 0 <= x) && 0 <= i) && 0 <= ret + 2147483648) && #NULL <= 0) && ret <= 2147483647) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 5 <= i) && 0 <= x) && 0 <= #NULL) && x <= 0) || ((((((((((((ret2 <= 2147483647 && 0 <= x) && 0 <= ret + 2147483648) && #NULL <= 0) && ret <= 2147483647) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 5 <= i) && 1 <= i) && i <= 2147483647) && 0 <= x) && 0 <= #NULL) && x <= 0))) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((((((((((((!(#NULL == 0) || ((((0 < 9223372036854775808 + ret && ret < 9223372036854775806) && 1 <= i) && 5 <= i) && 0 <= 9223372036854775808 + ret)) || (((((2 <= i && 0 <= x) && 0 <= x) && 1 <= ret) && ret <= 2) && x <= 0)) || (((((((ret == 0 && i == 0) && x == x) || (1 <= i && 1 <= ret)) && ret <= 1) && 0 <= x) && 0 <= x) && x <= 0)) || !(x == 0)) || ((0 <= ret && 2 <= i) && ret <= 0)) || ((0 <= ret && ret < 9223372036854775807) && 5 <= i)) || ((0 <= ret + 1 && ret < 9223372036854775805) && 3 <= i)) || ((ret + 1 <= 0 && 0 <= ret + 1) && 1 <= i)) || ((ret + 1 <= 0 && 2 <= i) && 0 <= 2 + ret)) || !(#NULL == 0)) || ((((ret < 9223372036854775806 && 4 <= i) && 1 <= i) && 0 < 9223372036854775807 + ret) && 0 <= 9223372036854775808 + ret)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(0 <= x)) || ((0 < 9223372036854775806 + ret && ret <= 1) && 3 <= i) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-25 22:26:20,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f24f9d-3707-4afd-9c2f-09f93ebd8a4b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE