./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh --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 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- 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-2329fc7 [2022-12-14 06:40:57,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:40:57,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:40:57,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:40:57,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:40:57,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:40:57,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:40:57,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:40:57,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:40:57,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:40:57,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:40:57,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:40:57,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:40:57,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:40:57,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:40:57,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:40:57,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:40:57,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:40:57,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:40:57,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:40:57,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:40:57,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:40:57,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:40:57,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:40:57,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:40:57,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:40:57,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:40:57,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:40:57,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:40:57,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:40:57,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:40:57,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:40:57,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:40:57,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:40:57,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:40:57,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:40:57,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:40:57,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:40:57,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:40:57,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:40:57,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:40:57,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 06:40:57,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:40:57,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:40:57,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:40:57,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:40:57,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:40:57,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:40:57,503 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:40:57,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:40:57,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:40:57,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:40:57,504 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:40:57,504 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:40:57,504 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:40:57,505 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:40:57,505 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:40:57,505 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:40:57,505 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:40:57,505 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:40:57,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:40:57,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:40:57,506 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:40:57,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:40:57,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:40:57,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:40:57,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:40:57,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:40:57,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:40:57,508 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:40:57,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:40:57,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:40:57,508 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:40:57,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:40:57,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:40:57,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:40:57,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:40:57,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:40:57,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:40:57,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:40:57,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:40:57,510 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:40:57,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:40:57,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:40:57,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:40:57,511 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_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2022-12-14 06:40:57,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:40:57,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:40:57,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:40:57,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:40:57,727 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:40:57,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2022-12-14 06:41:00,239 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:41:00,464 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:41:00,465 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2022-12-14 06:41:00,479 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/data/29aaddcaf/47ac263c6cad4b1aa20434a1d8810470/FLAG259bde2c8 [2022-12-14 06:41:00,810 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/data/29aaddcaf/47ac263c6cad4b1aa20434a1d8810470 [2022-12-14 06:41:00,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:41:00,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:41:00,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:41:00,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:41:00,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:41:00,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:41:00" (1/1) ... [2022-12-14 06:41:00,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b523cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:00, skipping insertion in model container [2022-12-14 06:41:00,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:41:00" (1/1) ... [2022-12-14 06:41:00,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:41:00,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:41:01,112 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_344051b5-8a92-47ba-8d33-8f48ee5077ae/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2022-12-14 06:41:01,193 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:41:01,195 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_344051b5-8a92-47ba-8d33-8f48ee5077ae/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2022-12-14 06:41:01,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:41:01,216 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:41:01,236 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_344051b5-8a92-47ba-8d33-8f48ee5077ae/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2022-12-14 06:41:01,284 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:41:01,285 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_344051b5-8a92-47ba-8d33-8f48ee5077ae/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2022-12-14 06:41:01,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:41:01,317 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:41:01,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01 WrapperNode [2022-12-14 06:41:01,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:41:01,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:41:01,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:41:01,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:41:01,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,427 INFO L138 Inliner]: procedures = 177, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1696 [2022-12-14 06:41:01,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:41:01,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:41:01,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:41:01,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:41:01,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,522 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:41:01,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:41:01,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:41:01,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:41:01,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (1/1) ... [2022-12-14 06:41:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:41:01,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:01,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:41:01,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:41:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:41:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 06:41:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 06:41:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:41:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 06:41:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 06:41:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:41:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:41:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:41:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:41:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 06:41:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:41:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:41:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:41:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:41:01,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:41:01,810 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:41:01,812 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:41:03,189 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:41:03,691 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:41:03,691 INFO L300 CfgBuilder]: Removed 100 assume(true) statements. [2022-12-14 06:41:03,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:41:03 BoogieIcfgContainer [2022-12-14 06:41:03,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:41:03,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:41:03,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:41:03,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:41:03,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:41:00" (1/3) ... [2022-12-14 06:41:03,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70635cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:41:03, skipping insertion in model container [2022-12-14 06:41:03,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:01" (2/3) ... [2022-12-14 06:41:03,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70635cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:41:03, skipping insertion in model container [2022-12-14 06:41:03,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:41:03" (3/3) ... [2022-12-14 06:41:03,702 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-3.i [2022-12-14 06:41:03,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:41:03,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 06:41:03,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:41:03,758 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;@66bcba4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:41:03,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-14 06:41:03,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 166 states have (on average 1.8313253012048192) internal successors, (304), 181 states have internal predecessors, (304), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:41:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 06:41:03,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:03,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 06:41:03,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 06:41:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:03,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1326082, now seen corresponding path program 1 times [2022-12-14 06:41:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:03,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875392205] [2022-12-14 06:41:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:03,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:03,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:03,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875392205] [2022-12-14 06:41:03,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875392205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:03,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:03,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:41:03,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276697951] [2022-12-14 06:41:03,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:41:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:41:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:41:03,927 INFO L87 Difference]: Start difference. First operand has 190 states, 166 states have (on average 1.8313253012048192) internal successors, (304), 181 states have internal predecessors, (304), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:05,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:41:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:05,822 INFO L93 Difference]: Finished difference Result 377 states and 651 transitions. [2022-12-14 06:41:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:41:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 06:41:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:05,835 INFO L225 Difference]: With dead ends: 377 [2022-12-14 06:41:05,835 INFO L226 Difference]: Without dead ends: 161 [2022-12-14 06:41:05,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:41:05,839 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:05,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 06:41:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-14 06:41:05,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-12-14 06:41:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 140 states have (on average 1.2285714285714286) internal successors, (172), 152 states have internal predecessors, (172), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:41:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-12-14 06:41:05,872 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 3 [2022-12-14 06:41:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:05,872 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-12-14 06:41:05,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-12-14 06:41:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 06:41:05,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:05,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 06:41:05,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:41:05,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 06:41:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash 41108601, now seen corresponding path program 1 times [2022-12-14 06:41:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:05,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980370858] [2022-12-14 06:41:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:05,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:41:05,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940239553] [2022-12-14 06:41:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:05,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:05,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:05,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:41:05,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:41:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:06,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:41:06,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:06,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:06,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:06,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980370858] [2022-12-14 06:41:06,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:41:06,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940239553] [2022-12-14 06:41:06,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940239553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:06,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:06,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:41:06,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876400850] [2022-12-14 06:41:06,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:06,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:41:06,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:06,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:41:06,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:06,093 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:08,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:41:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:09,055 INFO L93 Difference]: Finished difference Result 369 states and 455 transitions. [2022-12-14 06:41:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:41:09,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 06:41:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:09,062 INFO L225 Difference]: With dead ends: 369 [2022-12-14 06:41:09,062 INFO L226 Difference]: Without dead ends: 312 [2022-12-14 06:41:09,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:09,065 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 158 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:09,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 340 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 06:41:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-12-14 06:41:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 213. [2022-12-14 06:41:09,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 187 states have (on average 1.2459893048128343) internal successors, (233), 204 states have internal predecessors, (233), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-14 06:41:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 265 transitions. [2022-12-14 06:41:09,085 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 265 transitions. Word has length 4 [2022-12-14 06:41:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:09,086 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 265 transitions. [2022-12-14 06:41:09,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 265 transitions. [2022-12-14 06:41:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 06:41:09,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:09,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:09,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:41:09,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:09,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 06:41:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:09,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1177535634, now seen corresponding path program 1 times [2022-12-14 06:41:09,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:09,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353939034] [2022-12-14 06:41:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:09,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:09,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:41:09,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611648250] [2022-12-14 06:41:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:09,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:09,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:09,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:41:09,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:41:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:10,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:41:10,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:10,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:10,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:10,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353939034] [2022-12-14 06:41:10,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:41:10,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611648250] [2022-12-14 06:41:10,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611648250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:10,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:10,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:41:10,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265462137] [2022-12-14 06:41:10,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:10,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:41:10,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:41:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:41:10,523 INFO L87 Difference]: Start difference. First operand 213 states and 265 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-12-14 06:41:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:11,355 INFO L93 Difference]: Finished difference Result 213 states and 265 transitions. [2022-12-14 06:41:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:41:11,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-12-14 06:41:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:11,359 INFO L225 Difference]: With dead ends: 213 [2022-12-14 06:41:11,359 INFO L226 Difference]: Without dead ends: 211 [2022-12-14 06:41:11,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:41:11,360 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 119 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:11,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 331 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 06:41:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-14 06:41:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-12-14 06:41:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 187 states have (on average 1.2352941176470589) internal successors, (231), 202 states have internal predecessors, (231), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-14 06:41:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 263 transitions. [2022-12-14 06:41:11,370 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 263 transitions. Word has length 48 [2022-12-14 06:41:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:11,370 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 263 transitions. [2022-12-14 06:41:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-12-14 06:41:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 263 transitions. [2022-12-14 06:41:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 06:41:11,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:11,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:11,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:41:11,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:11,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 06:41:11,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:11,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2143865535, now seen corresponding path program 1 times [2022-12-14 06:41:11,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:11,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231762776] [2022-12-14 06:41:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:11,752 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:41:11,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747402530] [2022-12-14 06:41:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:11,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:11,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:11,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:41:11,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:41:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:12,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:41:12,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:12,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:12,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:12,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231762776] [2022-12-14 06:41:12,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:41:12,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747402530] [2022-12-14 06:41:12,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747402530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:12,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:12,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:41:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952958209] [2022-12-14 06:41:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:41:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:41:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:41:12,847 INFO L87 Difference]: Start difference. First operand 211 states and 263 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-12-14 06:41:16,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:41:17,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:41:19,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:41:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:19,977 INFO L93 Difference]: Finished difference Result 309 states and 375 transitions. [2022-12-14 06:41:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:41:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2022-12-14 06:41:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:19,985 INFO L225 Difference]: With dead ends: 309 [2022-12-14 06:41:19,986 INFO L226 Difference]: Without dead ends: 308 [2022-12-14 06:41:19,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:41:19,986 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 113 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:19,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 514 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-12-14 06:41:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-12-14 06:41:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2022-12-14 06:41:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 276 states have (on average 1.1956521739130435) internal successors, (330), 291 states have internal predecessors, (330), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-14 06:41:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 374 transitions. [2022-12-14 06:41:19,997 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 374 transitions. Word has length 49 [2022-12-14 06:41:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:19,998 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 374 transitions. [2022-12-14 06:41:19,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-12-14 06:41:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 374 transitions. [2022-12-14 06:41:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 06:41:19,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:19,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:20,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:41:20,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:20,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 06:41:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1733004885, now seen corresponding path program 1 times [2022-12-14 06:41:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:20,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726256294] [2022-12-14 06:41:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:20,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:41:20,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608857385] [2022-12-14 06:41:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:20,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:20,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:41:20,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:41:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:21,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:41:21,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:21,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:21,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:21,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726256294] [2022-12-14 06:41:21,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:41:21,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608857385] [2022-12-14 06:41:21,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608857385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:21,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:21,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:41:21,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405877560] [2022-12-14 06:41:21,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:41:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:41:21,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:21,357 INFO L87 Difference]: Start difference. First operand 306 states and 374 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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) [2022-12-14 06:41:24,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:41:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:24,691 INFO L93 Difference]: Finished difference Result 594 states and 742 transitions. [2022-12-14 06:41:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:41:24,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2022-12-14 06:41:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:24,696 INFO L225 Difference]: With dead ends: 594 [2022-12-14 06:41:24,696 INFO L226 Difference]: Without dead ends: 360 [2022-12-14 06:41:24,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:24,697 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 76 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:24,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 348 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 06:41:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-12-14 06:41:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356. [2022-12-14 06:41:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 316 states have (on average 1.2215189873417722) internal successors, (386), 341 states have internal predecessors, (386), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2022-12-14 06:41:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 450 transitions. [2022-12-14 06:41:24,711 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 450 transitions. Word has length 52 [2022-12-14 06:41:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:24,711 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 450 transitions. [2022-12-14 06:41:24,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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) [2022-12-14 06:41:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 450 transitions. [2022-12-14 06:41:24,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 06:41:24,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:24,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:24,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:41:24,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:24,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 06:41:24,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1697533425, now seen corresponding path program 1 times [2022-12-14 06:41:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:24,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085545579] [2022-12-14 06:41:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:25,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:41:25,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625507286] [2022-12-14 06:41:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:25,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:25,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:25,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:41:25,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 06:41:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:25,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:41:25,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 06:41:25,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:25,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:25,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085545579] [2022-12-14 06:41:25,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:41:25,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625507286] [2022-12-14 06:41:25,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625507286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:25,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:25,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:41:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235120857] [2022-12-14 06:41:25,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:25,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:41:25,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:41:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:25,883 INFO L87 Difference]: Start difference. First operand 356 states and 450 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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) [2022-12-14 06:41:29,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:41:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:29,918 INFO L93 Difference]: Finished difference Result 684 states and 868 transitions. [2022-12-14 06:41:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:41:29,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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 65 [2022-12-14 06:41:29,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:29,926 INFO L225 Difference]: With dead ends: 684 [2022-12-14 06:41:29,926 INFO L226 Difference]: Without dead ends: 354 [2022-12-14 06:41:29,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:29,928 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 11 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:29,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 331 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-12-14 06:41:29,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-12-14 06:41:29,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-12-14 06:41:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 314 states have (on average 1.2197452229299364) internal successors, (383), 339 states have internal predecessors, (383), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2022-12-14 06:41:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 447 transitions. [2022-12-14 06:41:29,943 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 447 transitions. Word has length 65 [2022-12-14 06:41:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:29,944 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 447 transitions. [2022-12-14 06:41:29,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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) [2022-12-14 06:41:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 447 transitions. [2022-12-14 06:41:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 06:41:29,946 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:29,946 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:29,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 06:41:30,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:30,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 06:41:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:30,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1412904880, now seen corresponding path program 1 times [2022-12-14 06:41:30,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:30,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005594042] [2022-12-14 06:41:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:30,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:30,245 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:41:30,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857535393] [2022-12-14 06:41:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:30,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:30,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:30,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:41:30,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 06:53:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:53:00,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 06:53:00,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:53:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 06:53:00,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:53:00,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:53:00,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005594042] [2022-12-14 06:53:00,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:53:00,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857535393] [2022-12-14 06:53:00,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857535393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:53:00,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:53:00,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:53:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182167022] [2022-12-14 06:53:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:53:00,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:53:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:53:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:53:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:53:00,451 INFO L87 Difference]: Start difference. First operand 354 states and 447 transitions. Second operand has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 06:53:02,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:53:03,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:53:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:53:03,945 INFO L93 Difference]: Finished difference Result 690 states and 886 transitions. [2022-12-14 06:53:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:53:03,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2022-12-14 06:53:03,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:53:03,952 INFO L225 Difference]: With dead ends: 690 [2022-12-14 06:53:03,952 INFO L226 Difference]: Without dead ends: 356 [2022-12-14 06:53:03,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:53:03,953 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:53:03,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 503 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 06:53:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-12-14 06:53:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2022-12-14 06:53:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 315 states have (on average 1.2222222222222223) internal successors, (385), 341 states have internal predecessors, (385), 32 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2022-12-14 06:53:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 453 transitions. [2022-12-14 06:53:03,965 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 453 transitions. Word has length 78 [2022-12-14 06:53:03,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:53:03,965 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 453 transitions. [2022-12-14 06:53:03,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 06:53:03,966 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 453 transitions. [2022-12-14 06:53:03,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 06:53:03,966 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:53:03,966 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:53:04,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 06:53:04,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:53:04,168 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 06:53:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:53:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2104059184, now seen corresponding path program 1 times [2022-12-14 06:53:04,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:53:04,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099118696] [2022-12-14 06:53:04,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:53:04,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:53:04,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:53:04,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094496440] [2022-12-14 06:53:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:53:04,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:53:04,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:53:04,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:53:04,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_344051b5-8a92-47ba-8d33-8f48ee5077ae/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process