./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f --- 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-5e519f3 [2022-11-03 03:40:02,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:40:02,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:40:02,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:40:02,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:40:02,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:40:02,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:40:02,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:40:02,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:40:02,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:40:02,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:40:02,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:40:02,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:40:02,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:40:02,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:40:02,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:40:02,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:40:02,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:40:02,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:40:02,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:40:02,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:40:02,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:40:02,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:40:02,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:40:02,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:40:02,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:40:02,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:40:02,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:40:02,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:40:02,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:40:02,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:40:02,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:40:02,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:40:02,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:40:02,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:40:02,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:40:02,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:40:02,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:40:02,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:40:02,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:40:02,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:40:02,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:40:02,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:40:02,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:40:02,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:40:02,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:40:02,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:40:02,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:40:02,374 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:40:02,374 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:40:02,374 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:40:02,374 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:40:02,375 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:40:02,376 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:40:02,376 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:40:02,376 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:40:02,376 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:40:02,377 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:40:02,377 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:40:02,377 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:40:02,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:40:02,378 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:40:02,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:40:02,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:40:02,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:40:02,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:40:02,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:40:02,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:40:02,381 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:40:02,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:40:02,381 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:40:02,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:40:02,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:40:02,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:40:02,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:40:02,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:40:02,383 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:40:02,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:40:02,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:40:02,383 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:40:02,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:40:02,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:40:02,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:40:02,384 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_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f [2022-11-03 03:40:02,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:40:02,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:40:02,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:40:02,736 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:40:02,737 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:40:02,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2022-11-03 03:40:02,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data/fdf2bf857/6b2334d76b6d466fa840385af164c001/FLAG6111eec79 [2022-11-03 03:40:03,403 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:40:03,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2022-11-03 03:40:03,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data/fdf2bf857/6b2334d76b6d466fa840385af164c001/FLAG6111eec79 [2022-11-03 03:40:03,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data/fdf2bf857/6b2334d76b6d466fa840385af164c001 [2022-11-03 03:40:03,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:40:03,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:40:03,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:40:03,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:40:03,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:40:03,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:03" (1/1) ... [2022-11-03 03:40:03,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f79ea92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03, skipping insertion in model container [2022-11-03 03:40:03,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:03" (1/1) ... [2022-11-03 03:40:03,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:40:03,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:40:04,182 WARN L230 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_9140b256-c92e-4669-b5db-568f91a381d3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-11-03 03:40:04,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:40:04,330 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:40:04,381 WARN L230 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_9140b256-c92e-4669-b5db-568f91a381d3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-11-03 03:40:04,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:40:04,475 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:40:04,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04 WrapperNode [2022-11-03 03:40:04,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:40:04,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:40:04,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:40:04,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:40:04,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,593 INFO L138 Inliner]: procedures = 177, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 621 [2022-11-03 03:40:04,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:40:04,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:40:04,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:40:04,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:40:04,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,650 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:40:04,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:40:04,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:40:04,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:40:04,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (1/1) ... [2022-11-03 03:40:04,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:40:04,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:04,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:40:04,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:40:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:40:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:40:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:40:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:40:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:40:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:40:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:40:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:40:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:40:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:40:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:40:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:40:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:40:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:40:04,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:40:05,053 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:40:05,055 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:40:06,458 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:40:06,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:40:06,793 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2022-11-03 03:40:06,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:06 BoogieIcfgContainer [2022-11-03 03:40:06,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:40:06,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:40:06,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:40:06,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:40:06,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:03" (1/3) ... [2022-11-03 03:40:06,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2e46b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:06, skipping insertion in model container [2022-11-03 03:40:06,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04" (2/3) ... [2022-11-03 03:40:06,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2e46b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:06, skipping insertion in model container [2022-11-03 03:40:06,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:06" (3/3) ... [2022-11-03 03:40:06,812 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-1.i [2022-11-03 03:40:06,832 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:40:06,832 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:40:06,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:40:06,910 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;@693130f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:40:06,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:40:06,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 64 states have (on average 1.78125) internal successors, (114), 75 states have internal predecessors, (114), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:40:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:40:06,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:06,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:06,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1633489720, now seen corresponding path program 1 times [2022-11-03 03:40:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:06,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102639844] [2022-11-03 03:40:06,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:07,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:07,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102639844] [2022-11-03 03:40:07,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102639844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:07,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:07,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:40:07,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875111527] [2022-11-03 03:40:07,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:07,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:07,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:07,228 INFO L87 Difference]: Start difference. First operand has 81 states, 64 states have (on average 1.78125) internal successors, (114), 75 states have internal predecessors, (114), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:10,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:40:10,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:10,351 INFO L93 Difference]: Finished difference Result 209 states and 376 transitions. [2022-11-03 03:40:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:10,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:40:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:10,390 INFO L225 Difference]: With dead ends: 209 [2022-11-03 03:40:10,390 INFO L226 Difference]: Without dead ends: 128 [2022-11-03 03:40:10,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:10,397 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 49 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:10,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 203 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 03:40:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-03 03:40:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 81. [2022-11-03 03:40:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 75 states have internal predecessors, (83), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:40:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2022-11-03 03:40:10,444 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 8 [2022-11-03 03:40:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:10,445 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2022-11-03 03:40:10,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2022-11-03 03:40:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 03:40:10,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:10,448 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] [2022-11-03 03:40:10,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:40:10,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1995011669, now seen corresponding path program 1 times [2022-11-03 03:40:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:10,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274787643] [2022-11-03 03:40:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:10,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:10,646 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:40:10,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285487054] [2022-11-03 03:40:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:10,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:10,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:10,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:40:10,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:40:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:11,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:40:11,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:11,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:40:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:11,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:11,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274787643] [2022-11-03 03:40:11,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:40:11,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285487054] [2022-11-03 03:40:11,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285487054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:40:11,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1213914756] [2022-11-03 03:40:11,692 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 03:40:11,692 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:40:11,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:40:11,701 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:40:11,702 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:40:11,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:11,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 03:40:11,858 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 03:40:11,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 03:40:11,940 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:40:11,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 03:40:11,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:11,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:11,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-03 03:40:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:11,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 03:40:12,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 03:40:12,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:40:12,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:12,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:12,473 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:40:12,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 03:40:12,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:40:12,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:12,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:12,891 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:40:12,901 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:40:13,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1213914756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:13,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:40:13,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-11-03 03:40:13,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656547127] [2022-11-03 03:40:13,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:13,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:40:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:40:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:40:13,687 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:17,148 INFO L93 Difference]: Finished difference Result 179 states and 239 transitions. [2022-11-03 03:40:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:40:17,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-03 03:40:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:17,156 INFO L225 Difference]: With dead ends: 179 [2022-11-03 03:40:17,157 INFO L226 Difference]: Without dead ends: 100 [2022-11-03 03:40:17,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:40:17,158 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 12 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:17,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 455 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 03:40:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-03 03:40:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2022-11-03 03:40:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.24) internal successors, (93), 85 states have internal predecessors, (93), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:40:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2022-11-03 03:40:17,176 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 31 [2022-11-03 03:40:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:17,176 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2022-11-03 03:40:17,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2022-11-03 03:40:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 03:40:17,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:17,179 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] [2022-11-03 03:40:17,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:40:17,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:17,395 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1705819700, now seen corresponding path program 1 times [2022-11-03 03:40:17,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:17,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086732523] [2022-11-03 03:40:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:17,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:17,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:40:17,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96082292] [2022-11-03 03:40:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:17,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:17,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:17,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:40:17,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:40:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:17,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:40:17,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:40:18,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:40:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:40:18,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086732523] [2022-11-03 03:40:18,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:40:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96082292] [2022-11-03 03:40:18,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96082292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:40:18,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1824378096] [2022-11-03 03:40:18,085 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-03 03:40:18,085 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:40:18,086 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:40:18,086 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:40:18,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:40:18,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:18,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 03:40:18,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:18,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 03:40:18,208 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:40:18,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 03:40:18,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:40:18,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:18,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:18,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-03 03:40:18,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:18,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 03:40:18,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:40:18,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:18,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 03:40:18,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 03:40:18,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2022-11-03 03:40:18,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 03:40:18,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-03 03:40:18,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 03:40:18,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-11-03 03:40:18,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 03:40:19,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 03:40:19,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:40:19,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:19,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:19,119 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:40:19,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2022-11-03 03:40:19,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 03:40:19,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 03:40:19,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 03:40:19,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-11-03 03:40:19,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 03:40:19,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-03 03:40:19,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 03:40:19,302 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 78 for LOIs [2022-11-03 03:40:19,343 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:40:20,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1824378096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:20,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:40:20,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-11-03 03:40:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134764814] [2022-11-03 03:40:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:20,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:40:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:40:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:40:20,667 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:40:25,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:40:25,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:25,697 INFO L93 Difference]: Finished difference Result 181 states and 241 transitions. [2022-11-03 03:40:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:40:25,715 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-03 03:40:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:25,716 INFO L225 Difference]: With dead ends: 181 [2022-11-03 03:40:25,716 INFO L226 Difference]: Without dead ends: 102 [2022-11-03 03:40:25,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:40:25,718 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 15 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:25,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 424 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 148 Invalid, 0 Unknown, 56 Unchecked, 3.5s Time] [2022-11-03 03:40:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-03 03:40:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2022-11-03 03:40:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 89 states have internal predecessors, (97), 14 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (14), 4 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 03:40:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2022-11-03 03:40:25,737 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 44 [2022-11-03 03:40:25,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:25,738 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2022-11-03 03:40:25,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:40:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2022-11-03 03:40:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 03:40:25,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:25,740 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] [2022-11-03 03:40:25,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:40:25,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:25,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:25,955 INFO L85 PathProgramCache]: Analyzing trace with hash -336880136, now seen corresponding path program 1 times [2022-11-03 03:40:25,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:25,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579614466] [2022-11-03 03:40:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:25,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:26,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:40:26,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534848516] [2022-11-03 03:40:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:26,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:26,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:26,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:40:26,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:40:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:26,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:40:26,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 03:40:26,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:40:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 03:40:26,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:26,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579614466] [2022-11-03 03:40:26,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:40:26,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534848516] [2022-11-03 03:40:26,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534848516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:40:26,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2079802505] [2022-11-03 03:40:26,691 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-03 03:40:26,692 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:40:26,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:40:26,692 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:40:26,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:40:26,765 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:40:26,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 03:40:26,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:26,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:26,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-03 03:40:26,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:40:26,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:26,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 03:40:26,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:26,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 03:40:27,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:27,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 03:40:27,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:40:27,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 03:40:27,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 03:40:27,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2022-11-03 03:40:27,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 03:40:27,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 03:40:27,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 03:40:27,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 03:40:27,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-03 03:40:27,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-11-03 03:40:27,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:40:27,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 03:40:27,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 03:40:27,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-03 03:40:27,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2022-11-03 03:40:27,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-03 03:40:27,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 03:40:27,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:40:27,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 03:40:27,373 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:40:27,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:40:27,387 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:40:27,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 30 [2022-11-03 03:40:27,402 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:40:27,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 16 [2022-11-03 03:40:27,471 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:40:27,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 30 [2022-11-03 03:40:27,488 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:40:27,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 16 [2022-11-03 03:40:27,502 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:40:27,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:40:36,025 WARN L234 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 67 DAG size of output: 32 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:40:36,026 INFO L356 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-03 03:40:36,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:40:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:36,228 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_288| input size 141 context size 141 output size 141 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 03:40:36,231 INFO L158 Benchmark]: Toolchain (without parser) took 32562.55ms. Allocated memory was 111.1MB in the beginning and 264.2MB in the end (delta: 153.1MB). Free memory was 77.3MB in the beginning and 104.9MB in the end (delta: -27.6MB). Peak memory consumption was 124.1MB. Max. memory is 16.1GB. [2022-11-03 03:40:36,232 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:40:36,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 805.74ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 67.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:40:36,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.19ms. Allocated memory is still 111.1MB. Free memory was 67.0MB in the beginning and 61.5MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 03:40:36,232 INFO L158 Benchmark]: Boogie Preprocessor took 63.76ms. Allocated memory is still 111.1MB. Free memory was 61.5MB in the beginning and 56.1MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:40:36,233 INFO L158 Benchmark]: RCFGBuilder took 2137.44ms. Allocated memory was 111.1MB in the beginning and 167.8MB in the end (delta: 56.6MB). Free memory was 56.1MB in the beginning and 67.1MB in the end (delta: -11.0MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2022-11-03 03:40:36,233 INFO L158 Benchmark]: TraceAbstraction took 29431.35ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 67.1MB in the beginning and 104.9MB in the end (delta: -37.8MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. [2022-11-03 03:40:36,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 805.74ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 67.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.19ms. Allocated memory is still 111.1MB. Free memory was 67.0MB in the beginning and 61.5MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.76ms. Allocated memory is still 111.1MB. Free memory was 61.5MB in the beginning and 56.1MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2137.44ms. Allocated memory was 111.1MB in the beginning and 167.8MB in the end (delta: 56.6MB). Free memory was 56.1MB in the beginning and 67.1MB in the end (delta: -11.0MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * TraceAbstraction took 29431.35ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 67.1MB in the beginning and 104.9MB in the end (delta: -37.8MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_288| input size 141 context size 141 output size 141 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_288| input size 141 context size 141 output size 141: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 03:40:36,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f --- 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-5e519f3 [2022-11-03 03:40:38,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:40:38,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:40:38,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:40:38,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:40:38,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:40:38,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:40:38,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:40:38,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:40:38,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:40:38,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:40:38,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:40:38,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:40:38,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:40:38,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:40:38,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:40:38,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:40:38,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:40:38,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:40:38,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:40:38,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:40:38,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:40:38,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:40:38,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:40:38,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:40:38,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:40:38,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:40:38,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:40:38,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:40:38,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:40:38,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:40:38,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:40:38,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:40:38,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:40:38,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:40:38,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:40:38,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:40:38,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:40:38,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:40:38,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:40:38,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:40:38,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 03:40:38,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:40:38,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:40:38,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:40:38,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:40:38,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:40:38,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:40:38,658 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:40:38,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:40:38,659 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:40:38,659 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:40:38,660 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:40:38,660 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:40:38,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:40:38,662 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:40:38,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:40:38,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:40:38,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:40:38,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:40:38,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:40:38,663 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:40:38,664 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:40:38,664 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:40:38,664 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:40:38,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:40:38,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:40:38,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:40:38,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:40:38,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:40:38,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:40:38,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:40:38,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:40:38,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:40:38,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:40:38,667 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:40:38,667 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:40:38,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:40:38,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:40:38,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:40:38,668 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f [2022-11-03 03:40:39,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:40:39,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:40:39,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:40:39,113 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:40:39,113 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:40:39,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2022-11-03 03:40:39,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data/56d558973/63ba066823544c9b9048196b9b5a023c/FLAGb0f2cb344 [2022-11-03 03:40:39,842 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:40:39,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2022-11-03 03:40:39,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data/56d558973/63ba066823544c9b9048196b9b5a023c/FLAGb0f2cb344 [2022-11-03 03:40:40,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/data/56d558973/63ba066823544c9b9048196b9b5a023c [2022-11-03 03:40:40,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:40:40,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:40:40,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:40:40,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:40:40,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:40:40,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:40" (1/1) ... [2022-11-03 03:40:40,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfe2874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:40, skipping insertion in model container [2022-11-03 03:40:40,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:40" (1/1) ... [2022-11-03 03:40:40,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:40:40,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:40:40,683 WARN L230 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_9140b256-c92e-4669-b5db-568f91a381d3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-11-03 03:40:40,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:40:40,842 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 03:40:40,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:40:40,869 WARN L230 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_9140b256-c92e-4669-b5db-568f91a381d3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-11-03 03:40:40,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:40:40,911 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:40:40,938 WARN L230 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_9140b256-c92e-4669-b5db-568f91a381d3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-11-03 03:40:40,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:40:41,028 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:40:41,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41 WrapperNode [2022-11-03 03:40:41,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:40:41,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:40:41,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:40:41,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:40:41,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,121 INFO L138 Inliner]: procedures = 180, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 622 [2022-11-03 03:40:41,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:40:41,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:40:41,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:40:41,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:40:41,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,193 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:40:41,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:40:41,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:40:41,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:40:41,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (1/1) ... [2022-11-03 03:40:41,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:40:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:41,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:40:41,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:40:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 03:40:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 03:40:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:40:41,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:40:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:40:41,303 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:40:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:40:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:40:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:40:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:40:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:40:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:40:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 03:40:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:40:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:40:41,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:40:41,556 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:40:41,558 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:40:47,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:40:47,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:40:47,431 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2022-11-03 03:40:47,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:47 BoogieIcfgContainer [2022-11-03 03:40:47,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:40:47,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:40:47,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:40:47,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:40:47,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:40" (1/3) ... [2022-11-03 03:40:47,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300d8f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:47, skipping insertion in model container [2022-11-03 03:40:47,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:41" (2/3) ... [2022-11-03 03:40:47,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300d8f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:47, skipping insertion in model container [2022-11-03 03:40:47,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:47" (3/3) ... [2022-11-03 03:40:47,442 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-1.i [2022-11-03 03:40:47,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:40:47,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:40:47,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:40:47,540 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;@2cc5775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:40:47,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:40:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:40:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:40:47,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:47,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:47,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash -388532060, now seen corresponding path program 1 times [2022-11-03 03:40:47,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:40:47,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019907514] [2022-11-03 03:40:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:47,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:40:47,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:40:47,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:40:47,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:40:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:47,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:40:47,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:47,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:40:47,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:40:47,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019907514] [2022-11-03 03:40:47,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019907514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:47,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:47,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:40:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417418566] [2022-11-03 03:40:47,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:47,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:47,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:40:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:47,882 INFO L87 Difference]: Start difference. First operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:48,232 INFO L93 Difference]: Finished difference Result 341 states and 579 transitions. [2022-11-03 03:40:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:48,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 03:40:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:48,252 INFO L225 Difference]: With dead ends: 341 [2022-11-03 03:40:48,253 INFO L226 Difference]: Without dead ends: 211 [2022-11-03 03:40:48,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:48,260 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 107 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:48,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 374 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:40:48,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-03 03:40:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 125. [2022-11-03 03:40:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 109 states have (on average 1.3394495412844036) internal successors, (146), 119 states have internal predecessors, (146), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:40:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2022-11-03 03:40:48,339 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 10 [2022-11-03 03:40:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:48,339 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2022-11-03 03:40:48,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2022-11-03 03:40:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 03:40:48,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:48,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:48,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 03:40:48,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:40:48,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1583744873, now seen corresponding path program 1 times [2022-11-03 03:40:48,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:40:48,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683938484] [2022-11-03 03:40:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:48,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:40:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:40:48,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:40:48,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:40:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:49,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:40:49,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:49,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:40:49,947 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:40:49,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683938484] [2022-11-03 03:40:49,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683938484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:49,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:49,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:40:49,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365911740] [2022-11-03 03:40:49,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:49,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:40:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:40:49,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:40:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:40:49,953 INFO L87 Difference]: Start difference. First operand 125 states and 172 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:50,127 INFO L93 Difference]: Finished difference Result 256 states and 353 transitions. [2022-11-03 03:40:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:40:50,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 03:40:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:50,149 INFO L225 Difference]: With dead ends: 256 [2022-11-03 03:40:50,149 INFO L226 Difference]: Without dead ends: 134 [2022-11-03 03:40:50,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:40:50,152 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 121 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:50,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 313 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:40:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-03 03:40:50,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2022-11-03 03:40:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 122 states have internal predecessors, (141), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:40:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 167 transitions. [2022-11-03 03:40:50,171 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 167 transitions. Word has length 61 [2022-11-03 03:40:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:50,171 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 167 transitions. [2022-11-03 03:40:50,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 167 transitions. [2022-11-03 03:40:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 03:40:50,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:50,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:50,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:40:50,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:40:50,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash -758509789, now seen corresponding path program 1 times [2022-11-03 03:40:50,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:40:50,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319055709] [2022-11-03 03:40:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:50,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:40:50,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:40:50,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:40:50,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:40:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:51,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:40:51,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:52,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:40:52,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:40:52,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319055709] [2022-11-03 03:40:52,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319055709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:52,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:52,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:40:52,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449383478] [2022-11-03 03:40:52,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:52,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:40:52,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:40:52,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:40:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:52,012 INFO L87 Difference]: Start difference. First operand 128 states and 167 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:52,446 INFO L93 Difference]: Finished difference Result 294 states and 377 transitions. [2022-11-03 03:40:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:40:52,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 03:40:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:52,457 INFO L225 Difference]: With dead ends: 294 [2022-11-03 03:40:52,457 INFO L226 Difference]: Without dead ends: 169 [2022-11-03 03:40:52,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:40:52,459 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:52,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 302 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:40:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-03 03:40:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-03 03:40:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 153 states have (on average 1.2156862745098038) internal successors, (186), 163 states have internal predecessors, (186), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:40:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 212 transitions. [2022-11-03 03:40:52,477 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 212 transitions. Word has length 61 [2022-11-03 03:40:52,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:52,478 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 212 transitions. [2022-11-03 03:40:52,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:40:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 212 transitions. [2022-11-03 03:40:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 03:40:52,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:52,480 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:52,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:40:52,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:40:52,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:52,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1910332062, now seen corresponding path program 1 times [2022-11-03 03:40:52,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:40:52,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721975887] [2022-11-03 03:40:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:52,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:40:52,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:40:52,706 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:40:52,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:40:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:53,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:40:53,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:40:53,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:40:53,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:40:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721975887] [2022-11-03 03:40:53,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721975887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:53,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:53,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:40:53,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872718811] [2022-11-03 03:40:53,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:53,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:40:53,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:40:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:40:53,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:40:53,554 INFO L87 Difference]: Start difference. First operand 169 states and 212 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:40:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:53,627 INFO L93 Difference]: Finished difference Result 297 states and 382 transitions. [2022-11-03 03:40:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:40:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2022-11-03 03:40:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:53,631 INFO L225 Difference]: With dead ends: 297 [2022-11-03 03:40:53,631 INFO L226 Difference]: Without dead ends: 172 [2022-11-03 03:40:53,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:40:53,633 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:53,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 467 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:40:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-03 03:40:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-03 03:40:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 155 states have (on average 1.2193548387096773) internal successors, (189), 166 states have internal predecessors, (189), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-03 03:40:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 216 transitions. [2022-11-03 03:40:53,653 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 216 transitions. Word has length 76 [2022-11-03 03:40:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:53,653 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 216 transitions. [2022-11-03 03:40:53,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:40:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 216 transitions. [2022-11-03 03:40:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 03:40:53,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:53,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:53,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:40:53,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:40:53,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:40:53,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash 159435968, now seen corresponding path program 1 times [2022-11-03 03:40:53,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:40:53,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526481526] [2022-11-03 03:40:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:53,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:40:53,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:40:53,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:40:53,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:40:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:54,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:40:54,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:40:54,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:40:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:40:55,011 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:40:55,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526481526] [2022-11-03 03:40:55,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526481526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:40:55,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1650770268] [2022-11-03 03:40:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:55,012 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:40:55,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:40:55,018 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:40:55,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 03:40:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:56,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:40:56,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:40:56,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:40:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:40:56,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1650770268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:40:56,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978763531] [2022-11-03 03:40:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:56,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:56,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:56,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:40:56,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:40:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:57,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:40:57,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:40:57,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:40:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:40:57,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978763531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:40:57,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:40:57,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2022-11-03 03:40:57,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953959660] [2022-11-03 03:40:57,769 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:40:57,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:40:57,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:40:57,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:40:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:40:57,772 INFO L87 Difference]: Start difference. First operand 172 states and 216 transitions. Second operand has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:40:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:59,675 INFO L93 Difference]: Finished difference Result 538 states and 700 transitions. [2022-11-03 03:40:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:40:59,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 78 [2022-11-03 03:40:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:59,679 INFO L225 Difference]: With dead ends: 538 [2022-11-03 03:40:59,679 INFO L226 Difference]: Without dead ends: 410 [2022-11-03 03:40:59,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:40:59,681 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 519 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:59,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 2120 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 03:40:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-03 03:40:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 408. [2022-11-03 03:40:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 381 states have (on average 1.2178477690288714) internal successors, (464), 392 states have internal predecessors, (464), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 13 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-03 03:40:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 512 transitions. [2022-11-03 03:40:59,739 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 512 transitions. Word has length 78 [2022-11-03 03:40:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:59,740 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 512 transitions. [2022-11-03 03:40:59,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:40:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 512 transitions. [2022-11-03 03:40:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-03 03:40:59,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:59,745 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-03 03:40:59,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:40:59,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:00,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:00,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:00,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1292683461, now seen corresponding path program 1 times [2022-11-03 03:41:00,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:41:00,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641388739] [2022-11-03 03:41:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:00,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:41:00,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:41:00,373 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:41:00,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:41:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:05,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 3827 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:41:05,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 127 proven. 10 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-03 03:41:05,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 109 proven. 27 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-03 03:41:05,550 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:41:05,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641388739] [2022-11-03 03:41:05,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641388739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:05,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1915555002] [2022-11-03 03:41:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:05,550 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:41:05,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:41:05,552 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:41:05,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 03:41:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:11,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 3827 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:41:11,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 127 proven. 10 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-03 03:41:11,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 109 proven. 27 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-03 03:41:11,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1915555002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:11,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652267370] [2022-11-03 03:41:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:11,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:11,479 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:11,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 03:41:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:15,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 3827 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:41:15,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 126 proven. 3 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-11-03 03:41:15,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 126 proven. 3 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-11-03 03:41:15,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652267370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:15,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:41:15,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-11-03 03:41:15,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658269219] [2022-11-03 03:41:15,652 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:41:15,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:41:15,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:41:15,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:41:15,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:41:15,655 INFO L87 Difference]: Start difference. First operand 408 states and 512 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:41:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:17,286 INFO L93 Difference]: Finished difference Result 795 states and 1047 transitions. [2022-11-03 03:41:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:41:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 235 [2022-11-03 03:41:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:17,291 INFO L225 Difference]: With dead ends: 795 [2022-11-03 03:41:17,291 INFO L226 Difference]: Without dead ends: 428 [2022-11-03 03:41:17,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1429 GetRequests, 1386 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 03:41:17,294 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 177 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:17,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1402 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:41:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-03 03:41:17,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 420. [2022-11-03 03:41:17,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 393 states have (on average 1.2213740458015268) internal successors, (480), 404 states have internal predecessors, (480), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 13 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-03 03:41:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 528 transitions. [2022-11-03 03:41:17,336 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 528 transitions. Word has length 235 [2022-11-03 03:41:17,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:17,339 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 528 transitions. [2022-11-03 03:41:17,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:41:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 528 transitions. [2022-11-03 03:41:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-03 03:41:17,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:17,351 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-03 03:41:17,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:17,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:17,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:41:17,952 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash 41390469, now seen corresponding path program 2 times [2022-11-03 03:41:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:41:17,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745742257] [2022-11-03 03:41:17,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 03:41:17,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:41:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:41:17,955 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:41:17,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 03:41:22,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 03:41:22,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:41:22,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 3959 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:41:22,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 211 proven. 55 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-03 03:41:22,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 109 proven. 156 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-03 03:41:23,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:41:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745742257] [2022-11-03 03:41:23,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745742257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [268281256] [2022-11-03 03:41:23,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 03:41:23,561 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:41:23,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:41:23,566 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:41:23,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 03:41:30,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 03:41:30,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:41:30,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 3959 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:41:30,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 211 proven. 55 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-03 03:41:30,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 109 proven. 156 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-03 03:41:30,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [268281256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:30,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614403146] [2022-11-03 03:41:30,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 03:41:30,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:30,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:30,726 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:30,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 03:41:34,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 03:41:34,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:41:35,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 3959 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:41:35,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-03 03:41:35,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:41:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-03 03:41:36,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614403146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:41:36,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:41:36,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2022-11-03 03:41:36,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306032473] [2022-11-03 03:41:36,821 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:41:36,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 03:41:36,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:41:36,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 03:41:36,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:41:36,823 INFO L87 Difference]: Start difference. First operand 420 states and 528 transitions. Second operand has 36 states, 36 states have (on average 15.527777777777779) internal successors, (559), 36 states have internal predecessors, (559), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:41:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:52,197 INFO L93 Difference]: Finished difference Result 1370 states and 1851 transitions. [2022-11-03 03:41:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-03 03:41:52,199 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 15.527777777777779) internal successors, (559), 36 states have internal predecessors, (559), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 247 [2022-11-03 03:41:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:52,205 INFO L225 Difference]: With dead ends: 1370 [2022-11-03 03:41:52,205 INFO L226 Difference]: Without dead ends: 993 [2022-11-03 03:41:52,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1515 GetRequests, 1446 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2022-11-03 03:41:52,209 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1817 mSDsluCounter, 9437 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 9994 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:52,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1893 Valid, 9994 Invalid, 3559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-03 03:41:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-11-03 03:41:52,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 975. [2022-11-03 03:41:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 930 states have (on average 1.2) internal successors, (1116), 941 states have internal predecessors, (1116), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2022-11-03 03:41:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1206 transitions. [2022-11-03 03:41:52,271 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1206 transitions. Word has length 247 [2022-11-03 03:41:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:52,271 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1206 transitions. [2022-11-03 03:41:52,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 15.527777777777779) internal successors, (559), 36 states have internal predecessors, (559), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:41:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1206 transitions. [2022-11-03 03:41:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-11-03 03:41:52,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:52,320 INFO L195 NwaCegarLoop]: trace histogram [33, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2022-11-03 03:41:52,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-03 03:41:52,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-03 03:41:52,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:52,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:41:52,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:52,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 902209655, now seen corresponding path program 3 times [2022-11-03 03:41:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:41:52,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087674350] [2022-11-03 03:41:52,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:41:52,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:41:52,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:41:52,939 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:41:52,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9140b256-c92e-4669-b5db-568f91a381d3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process