./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_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_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/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_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/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_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/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 713ae5dee39d08db1e818ebc31454a222c136fde7aad4a26405d3060cfa0eeea --- 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 08:08:39,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:08:39,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:08:39,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:08:39,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:08:39,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:08:39,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:08:39,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:08:39,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:08:39,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:08:39,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:08:39,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:08:39,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:08:39,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:08:39,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:08:39,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:08:39,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:08:39,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:08:39,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:08:39,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:08:39,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:08:39,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:08:39,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:08:39,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:08:39,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:08:39,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:08:39,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:08:39,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:08:39,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:08:39,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:08:39,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:08:39,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:08:39,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:08:39,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:08:39,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:08:39,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:08:39,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:08:39,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:08:39,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:08:39,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:08:39,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:08:39,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 08:08:39,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:08:39,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:08:39,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:08:39,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:08:39,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:08:39,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:08:39,687 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:08:39,687 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:08:39,687 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:08:39,687 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:08:39,688 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:08:39,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:08:39,688 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:08:39,688 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:08:39,688 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:08:39,688 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:08:39,689 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:08:39,689 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:08:39,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:08:39,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:08:39,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:08:39,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:08:39,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:08:39,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:08:39,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:08:39,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:08:39,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:08:39,691 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:08:39,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:08:39,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:08:39,691 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:08:39,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:08:39,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:08:39,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:08:39,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:08:39,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:08:39,692 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:08:39,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:08:39,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:08:39,693 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:08:39,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:08:39,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:08:39,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:08:39,693 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_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 713ae5dee39d08db1e818ebc31454a222c136fde7aad4a26405d3060cfa0eeea [2022-12-14 08:08:39,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:08:39,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:08:39,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:08:39,913 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:08:39,914 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:08:39,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i [2022-12-14 08:08:42,516 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:08:42,754 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:08:42,755 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i [2022-12-14 08:08:42,768 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/data/28b57a415/50363b97580846b98b48050564e26521/FLAGb80cd47f6 [2022-12-14 08:08:43,083 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/data/28b57a415/50363b97580846b98b48050564e26521 [2022-12-14 08:08:43,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:08:43,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:08:43,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:08:43,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:08:43,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:08:43,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57bacf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43, skipping insertion in model container [2022-12-14 08:08:43,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:08:43,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:08:43,448 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_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[33021,33034] [2022-12-14 08:08:43,558 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:08:43,560 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_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[49681,49694] [2022-12-14 08:08:43,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:08:43,592 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:08:43,620 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_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[33021,33034] [2022-12-14 08:08:43,697 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:08:43,699 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_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[49681,49694] [2022-12-14 08:08:43,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:08:43,742 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:08:43,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43 WrapperNode [2022-12-14 08:08:43,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:08:43,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:08:43,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:08:43,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:08:43,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,864 INFO L138 Inliner]: procedures = 177, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1696 [2022-12-14 08:08:43,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:08:43,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:08:43,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:08:43,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:08:43,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:08:43,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:08:43,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:08:43,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:08:43,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (1/1) ... [2022-12-14 08:08:43,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:08:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:43,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:08:43,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:08:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:08:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 08:08:43,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 08:08:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:08:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 08:08:43,999 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:08:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:08:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:08:44,199 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:08:44,201 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:08:45,651 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:08:46,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:08:46,152 INFO L300 CfgBuilder]: Removed 100 assume(true) statements. [2022-12-14 08:08:46,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:08:46 BoogieIcfgContainer [2022-12-14 08:08:46,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:08:46,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:08:46,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:08:46,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:08:46,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:08:43" (1/3) ... [2022-12-14 08:08:46,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9cd37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:08:46, skipping insertion in model container [2022-12-14 08:08:46,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:43" (2/3) ... [2022-12-14 08:08:46,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9cd37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:08:46, skipping insertion in model container [2022-12-14 08:08:46,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:08:46" (3/3) ... [2022-12-14 08:08:46,163 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-3.i [2022-12-14 08:08:46,181 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:08:46,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 08:08:46,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:08:46,239 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;@19ede7d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:08:46,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-14 08:08:46,244 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 08:08:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 08:08:46,249 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:46,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 08:08:46,250 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 08:08:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1326082, now seen corresponding path program 1 times [2022-12-14 08:08:46,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:46,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131314735] [2022-12-14 08:08:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:46,413 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 08:08:46,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131314735] [2022-12-14 08:08:46,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131314735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:46,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:46,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 08:08:46,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254580232] [2022-12-14 08:08:46,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:46,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:08:46,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:08:46,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:08:46,449 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 08:08:48,025 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 08:08:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:48,325 INFO L93 Difference]: Finished difference Result 377 states and 651 transitions. [2022-12-14 08:08:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:08:48,331 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 08:08:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:48,337 INFO L225 Difference]: With dead ends: 377 [2022-12-14 08:08:48,337 INFO L226 Difference]: Without dead ends: 161 [2022-12-14 08:08:48,339 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 08:08:48,341 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, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:48,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 08:08:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-14 08:08:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-12-14 08:08:48,371 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 08:08:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-12-14 08:08:48,374 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 3 [2022-12-14 08:08:48,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:48,374 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-12-14 08:08:48,374 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 08:08:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-12-14 08:08:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:08:48,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:48,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:08:48,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:08:48,375 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 08:08:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:48,375 INFO L85 PathProgramCache]: Analyzing trace with hash 41108601, now seen corresponding path program 1 times [2022-12-14 08:08:48,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:48,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406224646] [2022-12-14 08:08:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:48,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:48,402 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:08:48,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939864029] [2022-12-14 08:08:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:48,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:48,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:48,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:48,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:08:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:48,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:08:48,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:48,625 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 08:08:48,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:08:48,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:48,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406224646] [2022-12-14 08:08:48,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:08:48,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939864029] [2022-12-14 08:08:48,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939864029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:48,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:48,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 08:08:48,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422919242] [2022-12-14 08:08:48,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:48,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:08:48,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:48,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:08:48,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:08:48,629 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 08:08:50,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 08:08:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:51,510 INFO L93 Difference]: Finished difference Result 369 states and 455 transitions. [2022-12-14 08:08:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:08:51,514 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 08:08:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:51,516 INFO L225 Difference]: With dead ends: 369 [2022-12-14 08:08:51,516 INFO L226 Difference]: Without dead ends: 312 [2022-12-14 08:08:51,516 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 08:08:51,517 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 158 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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 08:08:51,518 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 08:08:51,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-12-14 08:08:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 213. [2022-12-14 08:08:51,531 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 08:08:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 265 transitions. [2022-12-14 08:08:51,532 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 265 transitions. Word has length 4 [2022-12-14 08:08:51,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:51,533 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 265 transitions. [2022-12-14 08:08:51,533 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 08:08:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 265 transitions. [2022-12-14 08:08:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 08:08:51,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:51,534 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 08:08:51,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:08:51,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:51,736 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 08:08:51,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1177535634, now seen corresponding path program 1 times [2022-12-14 08:08:51,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:51,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759781173] [2022-12-14 08:08:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:51,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:51,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:08:51,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214165259] [2022-12-14 08:08:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:51,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:51,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:51,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:08:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:52,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:08:52,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:52,948 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 08:08:52,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:08:52,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:52,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759781173] [2022-12-14 08:08:52,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:08:52,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214165259] [2022-12-14 08:08:52,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214165259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:52,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:52,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:08:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525809772] [2022-12-14 08:08:52,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:52,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:08:52,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:52,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:08:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:08:52,950 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 08:08:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:53,770 INFO L93 Difference]: Finished difference Result 213 states and 265 transitions. [2022-12-14 08:08:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:08:53,773 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 08:08:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:53,774 INFO L225 Difference]: With dead ends: 213 [2022-12-14 08:08:53,774 INFO L226 Difference]: Without dead ends: 211 [2022-12-14 08:08:53,775 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 08:08:53,775 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 08:08:53,776 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 08:08:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-14 08:08:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-12-14 08:08:53,784 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 08:08:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 263 transitions. [2022-12-14 08:08:53,785 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 263 transitions. Word has length 48 [2022-12-14 08:08:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:53,786 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 263 transitions. [2022-12-14 08:08:53,786 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 08:08:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 263 transitions. [2022-12-14 08:08:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 08:08:53,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:53,787 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 08:08:53,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 08:08:53,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 08:08:53,988 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 08:08:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2143865535, now seen corresponding path program 1 times [2022-12-14 08:08:53,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:53,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347892559] [2022-12-14 08:08:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:53,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:54,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:08:54,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211573170] [2022-12-14 08:08:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:54,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:54,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:54,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:54,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:08:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:55,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:08:55,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:55,199 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 08:08:55,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:08:55,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:55,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347892559] [2022-12-14 08:08:55,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:08:55,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211573170] [2022-12-14 08:08:55,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211573170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:55,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:55,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:08:55,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713036647] [2022-12-14 08:08:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:55,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:08:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:08:55,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:08:55,202 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 08:08:58,469 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 08:08:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:59,468 INFO L93 Difference]: Finished difference Result 309 states and 375 transitions. [2022-12-14 08:08:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:08:59,471 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 08:08:59,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:59,472 INFO L225 Difference]: With dead ends: 309 [2022-12-14 08:08:59,472 INFO L226 Difference]: Without dead ends: 308 [2022-12-14 08:08:59,473 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 08:08:59,473 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 113 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:59,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 514 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-12-14 08:08:59,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-12-14 08:08:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2022-12-14 08:08:59,484 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 08:08:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 374 transitions. [2022-12-14 08:08:59,485 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 374 transitions. Word has length 49 [2022-12-14 08:08:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:59,485 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 374 transitions. [2022-12-14 08:08:59,485 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 08:08:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 374 transitions. [2022-12-14 08:08:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:08:59,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:59,486 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 08:08:59,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:08:59,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:59,687 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 08:08:59,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:59,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1733004885, now seen corresponding path program 1 times [2022-12-14 08:08:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:59,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677611378] [2022-12-14 08:08:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:59,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:59,827 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:08:59,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009256595] [2022-12-14 08:08:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:59,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:59,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:59,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:59,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:09:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:09:00,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:09:00,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:09:00,769 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 08:09:00,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:09:00,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:09:00,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677611378] [2022-12-14 08:09:00,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:09:00,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009256595] [2022-12-14 08:09:00,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009256595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:09:00,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:09:00,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:09:00,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395786914] [2022-12-14 08:09:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:09:00,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:09:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:09:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:09:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:09:00,772 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 08:09:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:09:02,617 INFO L93 Difference]: Finished difference Result 594 states and 742 transitions. [2022-12-14 08:09:02,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:09:02,620 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 08:09:02,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:09:02,621 INFO L225 Difference]: With dead ends: 594 [2022-12-14 08:09:02,621 INFO L226 Difference]: Without dead ends: 360 [2022-12-14 08:09:02,622 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 08:09:02,623 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 76 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:09:02,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 348 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 08:09:02,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-12-14 08:09:02,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356. [2022-12-14 08:09:02,635 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 08:09:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 450 transitions. [2022-12-14 08:09:02,636 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 450 transitions. Word has length 52 [2022-12-14 08:09:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:09:02,636 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 450 transitions. [2022-12-14 08:09:02,637 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 08:09:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 450 transitions. [2022-12-14 08:09:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:09:02,638 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:09:02,638 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 08:09:02,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:09:02,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:09:02,840 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 08:09:02,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:09:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1697533425, now seen corresponding path program 1 times [2022-12-14 08:09:02,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:09:02,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107806407] [2022-12-14 08:09:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:09:02,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:09:03,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:09:03,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204203173] [2022-12-14 08:09:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:09:03,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:09:03,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:09:03,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:09:03,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:09:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:09:03,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:09:03,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:09:03,897 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 08:09:03,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:09:03,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:09:03,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107806407] [2022-12-14 08:09:03,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:09:03,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204203173] [2022-12-14 08:09:03,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204203173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:09:03,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:09:03,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:09:03,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907001480] [2022-12-14 08:09:03,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:09:03,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:09:03,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:09:03,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:09:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:09:03,901 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 08:09:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:09:06,079 INFO L93 Difference]: Finished difference Result 684 states and 868 transitions. [2022-12-14 08:09:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:09:06,084 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 08:09:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:09:06,086 INFO L225 Difference]: With dead ends: 684 [2022-12-14 08:09:06,086 INFO L226 Difference]: Without dead ends: 354 [2022-12-14 08:09:06,087 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 08:09:06,088 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 11 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:09:06,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 331 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 08:09:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-12-14 08:09:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-12-14 08:09:06,108 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 08:09:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 447 transitions. [2022-12-14 08:09:06,111 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 447 transitions. Word has length 65 [2022-12-14 08:09:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:09:06,111 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 447 transitions. [2022-12-14 08:09:06,112 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 08:09:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 447 transitions. [2022-12-14 08:09:06,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 08:09:06,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:09:06,114 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 08:09:06,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 08:09:06,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:09:06,316 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 08:09:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:09:06,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1412904880, now seen corresponding path program 1 times [2022-12-14 08:09:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:09:06,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568719151] [2022-12-14 08:09:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:09:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:09:06,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:09:06,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513769585] [2022-12-14 08:09:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:09:06,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:09:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:09:06,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:09:06,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 08:20:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:21,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 08:20:21,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:20:21,217 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 08:20:21,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:20:21,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:21,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568719151] [2022-12-14 08:20:21,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:20:21,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513769585] [2022-12-14 08:20:21,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513769585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:21,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:21,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:20:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491955156] [2022-12-14 08:20:21,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:21,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:20:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:20:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:20:21,219 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 08:20:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:24,390 INFO L93 Difference]: Finished difference Result 690 states and 886 transitions. [2022-12-14 08:20:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:20:24,393 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 08:20:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:24,395 INFO L225 Difference]: With dead ends: 690 [2022-12-14 08:20:24,395 INFO L226 Difference]: Without dead ends: 356 [2022-12-14 08:20:24,396 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 08:20:24,397 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:24,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 503 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 08:20:24,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-12-14 08:20:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2022-12-14 08:20:24,414 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 08:20:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 453 transitions. [2022-12-14 08:20:24,416 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 453 transitions. Word has length 78 [2022-12-14 08:20:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:24,416 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 453 transitions. [2022-12-14 08:20:24,416 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 08:20:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 453 transitions. [2022-12-14 08:20:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 08:20:24,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:24,417 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 08:20:24,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 08:20:24,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:24,619 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 08:20:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2104059184, now seen corresponding path program 1 times [2022-12-14 08:20:24,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:24,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881955389] [2022-12-14 08:20:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:24,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:24,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:20:24,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53923312] [2022-12-14 08:20:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:24,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:24,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:24,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:20:24,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc615f-5ecb-4cec-9f37-06b1a395fe24/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process