./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur --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 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:25:37,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:25:37,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:25:37,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:25:37,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:25:37,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:25:37,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:25:37,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:25:37,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:25:37,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:25:37,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:25:37,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:25:37,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:25:37,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:25:37,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:25:37,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:25:37,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:25:37,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:25:37,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:25:37,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:25:37,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:25:37,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:25:37,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:25:37,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:25:37,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:25:37,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:25:37,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:25:37,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:25:37,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:25:37,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:25:37,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:25:37,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:25:37,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:25:37,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:25:37,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:25:37,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:25:37,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:25:37,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:25:37,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:25:37,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:25:37,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:25:37,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:25:37,279 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:25:37,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:25:37,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:25:37,280 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:25:37,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:25:37,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:25:37,282 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:25:37,282 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:25:37,282 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:25:37,283 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:25:37,284 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:25:37,284 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:25:37,285 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:25:37,285 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:25:37,285 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:25:37,285 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:25:37,286 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:25:37,286 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:25:37,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:25:37,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:25:37,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:25:37,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:25:37,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:25:37,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:25:37,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:25:37,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:25:37,290 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:25:37,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:25:37,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:25:37,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:25:37,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:25:37,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:25:37,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:25:37,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:25:37,292 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:25:37,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:25:37,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:25:37,293 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:25:37,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:25:37,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:25:37,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:25:37,294 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_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2022-11-25 22:25:37,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:25:37,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:25:37,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:25:37,643 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:25:37,643 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:25:37,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2022-11-25 22:25:41,126 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:25:41,548 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:25:41,549 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2022-11-25 22:25:41,568 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/data/98ab9f66f/94f9d6089d8d4f98810abf7890bc82eb/FLAG4e4d8efef [2022-11-25 22:25:41,584 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/data/98ab9f66f/94f9d6089d8d4f98810abf7890bc82eb [2022-11-25 22:25:41,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:25:41,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:25:41,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:25:41,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:25:41,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:25:41,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:25:41" (1/1) ... [2022-11-25 22:25:41,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258bad7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:41, skipping insertion in model container [2022-11-25 22:25:41,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:25:41" (1/1) ... [2022-11-25 22:25:41,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:25:41,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:25:42,141 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-11-25 22:25:42,412 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:25:42,429 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-11-25 22:25:42,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:25:42,465 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:25:42,524 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-11-25 22:25:42,657 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:25:42,661 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-11-25 22:25:42,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:25:42,724 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:25:42,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42 WrapperNode [2022-11-25 22:25:42,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:25:42,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:25:42,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:25:42,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:25:42,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:42,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:42,931 INFO L138 Inliner]: procedures = 177, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-11-25 22:25:42,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:25:42,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:25:42,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:25:42,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:25:42,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:42,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:42,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:42,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:43,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:43,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:43,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:43,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:43,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:25:43,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:25:43,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:25:43,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:25:43,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (1/1) ... [2022-11-25 22:25:43,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:25:43,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:43,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:25:43,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:25:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:25:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:25:43,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:25:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:25:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 22:25:43,331 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 22:25:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:25:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:25:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:25:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:25:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 22:25:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:25:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:25:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:25:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:25:43,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:25:43,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:25:43,675 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:25:46,062 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:25:46,729 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:25:46,729 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-11-25 22:25:46,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:25:46 BoogieIcfgContainer [2022-11-25 22:25:46,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:25:46,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:25:46,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:25:46,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:25:46,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:25:41" (1/3) ... [2022-11-25 22:25:46,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317faefa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:25:46, skipping insertion in model container [2022-11-25 22:25:46,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:25:42" (2/3) ... [2022-11-25 22:25:46,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317faefa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:25:46, skipping insertion in model container [2022-11-25 22:25:46,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:25:46" (3/3) ... [2022-11-25 22:25:46,759 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-1.i [2022-11-25 22:25:46,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:25:46,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:25:46,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:25:46,888 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;@11268111, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:25:46,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:25:46,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:25:46,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:25:46,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:46,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 22:25:46,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:25:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1961289775, now seen corresponding path program 1 times [2022-11-25 22:25:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:46,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235386896] [2022-11-25 22:25:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:46,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:47,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235386896] [2022-11-25 22:25:47,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 22:25:47,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108162168] [2022-11-25 22:25:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:47,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:47,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:47,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:47,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:25:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:47,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 22:25:47,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:47,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:47,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108162168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:47,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:47,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:25:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121133955] [2022-11-25 22:25:47,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:47,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:25:47,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:47,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:25:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:25:47,574 INFO L87 Difference]: Start difference. First operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:49,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 22:25:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:49,732 INFO L93 Difference]: Finished difference Result 301 states and 538 transitions. [2022-11-25 22:25:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:25:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 22:25:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:49,751 INFO L225 Difference]: With dead ends: 301 [2022-11-25 22:25:49,752 INFO L226 Difference]: Without dead ends: 150 [2022-11-25 22:25:49,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:25:49,760 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:49,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 22:25:49,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-25 22:25:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-25 22:25:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 141 states have internal predecessors, (161), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:25:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2022-11-25 22:25:49,827 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 6 [2022-11-25 22:25:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:49,828 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2022-11-25 22:25:49,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2022-11-25 22:25:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:25:49,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:49,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:49,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:50,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 22:25:50,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:25:50,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash -986732469, now seen corresponding path program 1 times [2022-11-25 22:25:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:50,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629593023] [2022-11-25 22:25:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:50,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:50,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629593023] [2022-11-25 22:25:50,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 22:25:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674586526] [2022-11-25 22:25:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:50,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:50,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:50,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:50,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:25:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:50,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:25:50,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:50,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:50,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674586526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:50,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:50,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:25:50,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545157294] [2022-11-25 22:25:50,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:50,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:25:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:25:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:25:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:25:50,479 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:53,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 22:25:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:53,794 INFO L93 Difference]: Finished difference Result 342 states and 425 transitions. [2022-11-25 22:25:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:25:53,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 22:25:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:53,802 INFO L225 Difference]: With dead ends: 342 [2022-11-25 22:25:53,802 INFO L226 Difference]: Without dead ends: 290 [2022-11-25 22:25:53,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:25:53,805 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 148 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:53,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 351 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 22:25:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-25 22:25:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 151. [2022-11-25 22:25:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 142 states have internal predecessors, (162), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:25:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2022-11-25 22:25:53,831 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 17 [2022-11-25 22:25:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:53,831 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2022-11-25 22:25:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2022-11-25 22:25:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 22:25:53,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:53,835 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] [2022-11-25 22:25:53,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:54,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 22:25:54,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:25:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash -72453235, now seen corresponding path program 1 times [2022-11-25 22:25:54,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:25:54,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124805758] [2022-11-25 22:25:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:25:54,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:25:54,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532904782] [2022-11-25 22:25:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:54,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:54,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:54,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:54,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:25:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:56,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:25:56,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:56,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:25:56,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:25:56,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124805758] [2022-11-25 22:25:56,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:25:56,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532904782] [2022-11-25 22:25:56,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532904782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:56,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [844151115] [2022-11-25 22:25:56,421 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-25 22:25:56,422 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:25:56,427 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:25:56,434 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:25:56,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:25:56,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,617 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:25:56,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-25 22:25:56,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,668 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:25:56,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:25:56,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,736 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:25:56,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,797 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-25 22:25:56,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-25 22:25:56,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-25 22:25:56,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:25:56,849 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:25:56,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:56,879 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:25:57,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:25:57,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-25 22:25:57,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:57,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-11-25 22:25:57,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:25:58,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:25:58,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:25:58,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-25 22:25:58,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:58,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-25 22:25:58,524 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:26:05,509 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:26:13,113 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:26:13,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [844151115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:13,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:26:13,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-11-25 22:26:13,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190414716] [2022-11-25 22:26:13,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:13,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:26:13,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:26:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=69, Unknown=1, NotChecked=0, Total=132 [2022-11-25 22:26:13,123 INFO L87 Difference]: Start difference. First operand 151 states and 184 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:15,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:26:17,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:26:19,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:26:23,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 22:26:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:24,167 INFO L93 Difference]: Finished difference Result 313 states and 382 transitions. [2022-11-25 22:26:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:26:24,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-25 22:26:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:24,169 INFO L225 Difference]: With dead ends: 313 [2022-11-25 22:26:24,169 INFO L226 Difference]: Without dead ends: 164 [2022-11-25 22:26:24,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=62, Invalid=69, Unknown=1, NotChecked=0, Total=132 [2022-11-25 22:26:24,172 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:24,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 402 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-11-25 22:26:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-25 22:26:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-11-25 22:26:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 146 states have (on average 1.178082191780822) internal successors, (172), 152 states have internal predecessors, (172), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:26:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-11-25 22:26:24,220 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 61 [2022-11-25 22:26:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:24,222 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-11-25 22:26:24,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:24,223 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-11-25 22:26:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 22:26:24,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:24,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:24,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:24,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:24,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:24,444 INFO L85 PathProgramCache]: Analyzing trace with hash -68250796, now seen corresponding path program 1 times [2022-11-25 22:26:24,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:24,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868949436] [2022-11-25 22:26:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:24,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:24,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:26:24,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304259284] [2022-11-25 22:26:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:24,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:24,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:24,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:24,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:26:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:26,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:26:26,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:26:26,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:26:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:26:26,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:26,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868949436] [2022-11-25 22:26:26,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:26:26,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304259284] [2022-11-25 22:26:26,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304259284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:26:26,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1090236745] [2022-11-25 22:26:26,366 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-25 22:26:26,366 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:26:26,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:26:26,367 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:26:26,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:26:26,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,505 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:26:26,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:26:26,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:26:26,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,592 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:26:26,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-25 22:26:26,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,656 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-25 22:26:26,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-25 22:26:26,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:26:26,680 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:26:26,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,707 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:26:26,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:26,729 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:26:27,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:26:27,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:26:27,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-25 22:26:27,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-25 22:26:27,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-25 22:26:27,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-25 22:26:27,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-25 22:26:27,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-25 22:26:27,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 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 [2022-11-25 22:26:27,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,847 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-25 22:26:27,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-25 22:26:27,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:27,979 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-25 22:26:27,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-25 22:26:28,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-25 22:26:28,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 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 [2022-11-25 22:26:28,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:26:28,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:28,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-25 22:26:29,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-25 22:26:29,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:26:29,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-25 22:26:29,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-11-25 22:26:29,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-11-25 22:26:29,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-25 22:26:29,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 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 [2022-11-25 22:26:29,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,542 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-25 22:26:29,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-25 22:26:29,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,657 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-25 22:26:29,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-25 22:26:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:29,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-11-25 22:26:29,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 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 [2022-11-25 22:26:30,228 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 253 for LOIs [2022-11-25 22:26:30,356 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:26:37,648 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:26:45,722 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:26:55,979 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 262 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:27:11,512 WARN L233 SmtUtils]: Spent 9.35s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:27:26,864 WARN L233 SmtUtils]: Spent 9.11s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:27:27,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1090236745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:27,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:27:27,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-11-25 22:27:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556266294] [2022-11-25 22:27:27,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:27,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 22:27:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:27:27,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 22:27:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-11-25 22:27:27,741 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:30,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:32,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:34,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:36,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:38,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:41,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:43,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:45,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:47,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:55,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 22:27:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:56,521 INFO L93 Difference]: Finished difference Result 315 states and 384 transitions. [2022-11-25 22:27:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 22:27:56,522 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2022-11-25 22:27:56,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:56,524 INFO L225 Difference]: With dead ends: 315 [2022-11-25 22:27:56,524 INFO L226 Difference]: Without dead ends: 166 [2022-11-25 22:27:56,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 57.4s TimeCoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-11-25 22:27:56,526 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:56,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 9 Unknown, 0 Unchecked, 28.7s Time] [2022-11-25 22:27:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-25 22:27:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-25 22:27:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 150 states have (on average 1.1733333333333333) internal successors, (176), 156 states have internal predecessors, (176), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 7 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-25 22:27:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2022-11-25 22:27:56,569 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 74 [2022-11-25 22:27:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:56,570 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2022-11-25 22:27:56,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2022-11-25 22:27:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 22:27:56,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:56,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:56,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:56,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:56,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:27:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:56,787 INFO L85 PathProgramCache]: Analyzing trace with hash 321637894, now seen corresponding path program 1 times [2022-11-25 22:27:56,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:27:56,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4189795] [2022-11-25 22:27:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:56,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:27:56,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:27:56,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227103884] [2022-11-25 22:27:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:56,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:56,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:27:57,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:27:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:58,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:27:58,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 22:27:58,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 22:27:58,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:27:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4189795] [2022-11-25 22:27:58,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:27:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227103884] [2022-11-25 22:27:58,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227103884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1272527099] [2022-11-25 22:27:58,829 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-25 22:27:58,829 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:27:58,830 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:27:58,830 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:27:58,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:27:58,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,001 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 22:27:59,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-25 22:27:59,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-25 22:27:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,086 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:27:59,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-25 22:27:59,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:27:59,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,126 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:27:59,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 43 [2022-11-25 22:27:59,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,151 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:27:59,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,171 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:27:59,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,238 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-25 22:27:59,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-25 22:27:59,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:27:59,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-25 22:27:59,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-25 22:27:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-11-25 22:27:59,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-25 22:27:59,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-25 22:27:59,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:59,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-25 22:28:00,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-25 22:28:00,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 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 [2022-11-25 22:28:00,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 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 [2022-11-25 22:28:00,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,213 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-25 22:28:00,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-25 22:28:00,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,313 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-25 22:28:00,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-25 22:28:00,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-25 22:28:00,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:28:00,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:28:00,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:28:00,699 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-25 22:28:00,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2022-11-25 22:28:00,737 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:28:00,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2022-11-25 22:28:00,779 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:28:00,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-11-25 22:28:00,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 22:28:00,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-25 22:28:00,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-25 22:28:00,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:00,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-11-25 22:28:00,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-25 22:28:01,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-25 22:28:01,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:01,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-11-25 22:28:01,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-25 22:28:01,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-25 22:28:03,183 INFO L217 Elim1Store]: Index analysis took 1536 ms [2022-11-25 22:28:11,589 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 109 DAG size of output: 31 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 22:28:11,589 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-11-25 22:28:11,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 10752723 treesize of output 10752742 [2022-11-25 22:28:13,497 INFO L217 Elim1Store]: Index analysis took 1617 ms [2022-11-25 22:28:14,183 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-11-25 22:28:14,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 10752718 treesize of output 10752722 [2022-11-25 22:28:39,346 INFO L217 Elim1Store]: Index analysis took 1614 ms [2022-11-25 22:29:43,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:43,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:43,254 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152779 column 7: canceled at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) 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.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:337) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152779 column 7: canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.pushContext(SimplifyDDA.java:736) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:389) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:648) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:318) 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) ... 59 more [2022-11-25 22:29:43,259 INFO L158 Benchmark]: Toolchain (without parser) took 241669.46ms. Allocated memory was 172.0MB in the beginning and 12.0GB in the end (delta: 11.8GB). Free memory was 139.0MB in the beginning and 10.0GB in the end (delta: -9.8GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2022-11-25 22:29:43,259 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 125.8MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:29:43,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1132.93ms. Allocated memory is still 172.0MB. Free memory was 139.0MB in the beginning and 101.3MB in the end (delta: 37.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-25 22:29:43,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 207.27ms. Allocated memory is still 172.0MB. Free memory was 101.3MB in the beginning and 92.0MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 22:29:43,260 INFO L158 Benchmark]: Boogie Preprocessor took 280.78ms. Allocated memory is still 172.0MB. Free memory was 92.0MB in the beginning and 132.6MB in the end (delta: -40.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-11-25 22:29:43,260 INFO L158 Benchmark]: RCFGBuilder took 3520.35ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 131.7MB in the beginning and 168.7MB in the end (delta: -36.9MB). Peak memory consumption was 117.0MB. Max. memory is 16.1GB. [2022-11-25 22:29:43,261 INFO L158 Benchmark]: TraceAbstraction took 236513.11ms. Allocated memory was 224.4MB in the beginning and 12.0GB in the end (delta: 11.7GB). Free memory was 167.6MB in the beginning and 10.0GB in the end (delta: -9.8GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2022-11-25 22:29:43,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 125.8MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1132.93ms. Allocated memory is still 172.0MB. Free memory was 139.0MB in the beginning and 101.3MB in the end (delta: 37.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 207.27ms. Allocated memory is still 172.0MB. Free memory was 101.3MB in the beginning and 92.0MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 280.78ms. Allocated memory is still 172.0MB. Free memory was 92.0MB in the beginning and 132.6MB in the end (delta: -40.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3520.35ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 131.7MB in the beginning and 168.7MB in the end (delta: -36.9MB). Peak memory consumption was 117.0MB. Max. memory is 16.1GB. * TraceAbstraction took 236513.11ms. Allocated memory was 224.4MB in the beginning and 12.0GB in the end (delta: 11.7GB). Free memory was 167.6MB in the beginning and 10.0GB in the end (delta: -9.8GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152779 column 7: canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152779 column 7: canceled: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-25 22:29:43,475 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-25 22:29:43,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur --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 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:29:46,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:29:46,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:29:46,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:29:46,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:29:46,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:29:46,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:29:46,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:29:46,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:29:46,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:29:46,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:29:46,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:29:46,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:29:46,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:29:46,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:29:46,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:29:46,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:29:46,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:29:46,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:29:46,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:29:46,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:29:46,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:29:46,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:29:46,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:29:46,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:29:46,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:29:46,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:29:46,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:29:46,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:29:46,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:29:46,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:29:46,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:29:46,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:29:46,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:29:46,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:29:46,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:29:46,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:29:46,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:29:46,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:29:46,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:29:46,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:29:46,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-25 22:29:46,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:29:46,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:29:46,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:29:46,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:29:46,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:29:46,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:29:46,626 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:29:46,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:29:46,627 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:29:46,627 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:29:46,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:29:46,629 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:29:46,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:29:46,630 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:29:46,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:29:46,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:29:46,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:29:46,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:29:46,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:29:46,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:29:46,632 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:29:46,633 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:29:46,633 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:29:46,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:29:46,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:29:46,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:29:46,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:29:46,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:29:46,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:29:46,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:29:46,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:29:46,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:29:46,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:29:46,637 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:29:46,637 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:29:46,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:29:46,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:29:46,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:29:46,639 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_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2022-11-25 22:29:47,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:29:47,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:29:47,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:29:47,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:29:47,176 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:29:47,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2022-11-25 22:29:50,721 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:29:51,106 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:29:51,106 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2022-11-25 22:29:51,126 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/data/a39aaef02/af2786656bc84b10abea94bd7ec3e302/FLAG729467b95 [2022-11-25 22:29:51,143 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/data/a39aaef02/af2786656bc84b10abea94bd7ec3e302 [2022-11-25 22:29:51,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:29:51,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:29:51,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:29:51,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:29:51,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:29:51,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:29:51" (1/1) ... [2022-11-25 22:29:51,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7174bd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:51, skipping insertion in model container [2022-11-25 22:29:51,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:29:51" (1/1) ... [2022-11-25 22:29:51,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:29:51,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:29:51,748 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-11-25 22:29:51,972 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:29:51,974 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-11-25 22:29:51,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:29:52,007 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 22:29:52,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:29:52,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-11-25 22:29:52,109 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:29:52,111 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-11-25 22:29:52,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:29:52,120 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:29:52,147 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-11-25 22:29:52,225 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:29:52,227 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-11-25 22:29:52,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:29:52,279 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:29:52,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52 WrapperNode [2022-11-25 22:29:52,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:29:52,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:29:52,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:29:52,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:29:52,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,408 INFO L138 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-11-25 22:29:52,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:29:52,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:29:52,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:29:52,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:29:52,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:29:52,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:29:52,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:29:52,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:29:52,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (1/1) ... [2022-11-25 22:29:52,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:29:52,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:52,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:29:52,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:29:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-25 22:29:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 22:29:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:29:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:29:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 22:29:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 22:29:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:29:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:29:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:29:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:29:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 22:29:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:29:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:29:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 22:29:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:29:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:29:52,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:29:53,084 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:29:53,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:30:06,381 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:30:06,398 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:30:06,398 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-11-25 22:30:06,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:30:06 BoogieIcfgContainer [2022-11-25 22:30:06,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:30:06,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:30:06,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:30:06,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:30:06,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:29:51" (1/3) ... [2022-11-25 22:30:06,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677a64fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:30:06, skipping insertion in model container [2022-11-25 22:30:06,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:52" (2/3) ... [2022-11-25 22:30:06,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677a64fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:30:06, skipping insertion in model container [2022-11-25 22:30:06,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:30:06" (3/3) ... [2022-11-25 22:30:06,415 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-1.i [2022-11-25 22:30:06,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:30:06,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:30:06,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:30:06,509 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;@7787df40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:30:06,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:30:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:30:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:30:06,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:06,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:06,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:06,530 INFO L85 PathProgramCache]: Analyzing trace with hash 678032416, now seen corresponding path program 1 times [2022-11-25 22:30:06,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:06,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868743086] [2022-11-25 22:30:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:06,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:06,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:06,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:06,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 22:30:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:06,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 22:30:06,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:06,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:06,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868743086] [2022-11-25 22:30:06,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868743086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:06,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:06,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:30:06,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678316736] [2022-11-25 22:30:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:06,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:30:06,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:06,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:30:06,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:30:06,903 INFO L87 Difference]: Start difference. First operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:06,962 INFO L93 Difference]: Finished difference Result 506 states and 857 transitions. [2022-11-25 22:30:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:30:06,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 22:30:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:06,976 INFO L225 Difference]: With dead ends: 506 [2022-11-25 22:30:06,976 INFO L226 Difference]: Without dead ends: 250 [2022-11-25 22:30:06,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:30:06,985 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:06,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-25 22:30:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-11-25 22:30:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 241 states have internal predecessors, (309), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:30:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-11-25 22:30:07,045 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 8 [2022-11-25 22:30:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:07,046 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-11-25 22:30:07,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-11-25 22:30:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 22:30:07,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:07,051 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] [2022-11-25 22:30:07,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 22:30:07,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:07,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:07,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:07,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1368100487, now seen corresponding path program 1 times [2022-11-25 22:30:07,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:07,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272956171] [2022-11-25 22:30:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:07,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:07,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:07,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:07,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 22:30:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:07,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:30:07,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:07,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:07,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:07,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272956171] [2022-11-25 22:30:07,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272956171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:07,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:07,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269762143] [2022-11-25 22:30:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:07,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:07,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:07,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:07,682 INFO L87 Difference]: Start difference. First operand 250 states and 331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:08,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:08,016 INFO L93 Difference]: Finished difference Result 565 states and 756 transitions. [2022-11-25 22:30:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:08,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-25 22:30:08,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:08,025 INFO L225 Difference]: With dead ends: 565 [2022-11-25 22:30:08,025 INFO L226 Difference]: Without dead ends: 487 [2022-11-25 22:30:08,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:08,033 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 294 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:08,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:30:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-25 22:30:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 251. [2022-11-25 22:30:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 242 states have internal predecessors, (310), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:30:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 332 transitions. [2022-11-25 22:30:08,078 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 332 transitions. Word has length 42 [2022-11-25 22:30:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:08,079 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 332 transitions. [2022-11-25 22:30:08,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 332 transitions. [2022-11-25 22:30:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-25 22:30:08,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:08,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:08,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:08,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:08,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1909784615, now seen corresponding path program 1 times [2022-11-25 22:30:08,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:08,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040596522] [2022-11-25 22:30:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:08,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:08,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:08,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:08,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 22:30:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:10,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:10,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:10,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:10,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:10,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040596522] [2022-11-25 22:30:10,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040596522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:10,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:10,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:30:10,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437799009] [2022-11-25 22:30:10,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:10,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:10,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:10,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:10,792 INFO L87 Difference]: Start difference. First operand 251 states and 332 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:10,959 INFO L93 Difference]: Finished difference Result 508 states and 673 transitions. [2022-11-25 22:30:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:30:10,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-25 22:30:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:10,962 INFO L225 Difference]: With dead ends: 508 [2022-11-25 22:30:10,962 INFO L226 Difference]: Without dead ends: 260 [2022-11-25 22:30:10,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:30:10,965 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 292 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:10,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 631 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-25 22:30:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2022-11-25 22:30:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.2761506276150627) internal successors, (305), 245 states have internal predecessors, (305), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:30:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 327 transitions. [2022-11-25 22:30:10,986 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 327 transitions. Word has length 140 [2022-11-25 22:30:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:10,987 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 327 transitions. [2022-11-25 22:30:10,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 327 transitions. [2022-11-25 22:30:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-25 22:30:10,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:10,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:11,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:11,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1562910771, now seen corresponding path program 1 times [2022-11-25 22:30:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:11,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100951326] [2022-11-25 22:30:11,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:11,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:11,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:11,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:11,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 22:30:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:13,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:13,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:13,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:13,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:13,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100951326] [2022-11-25 22:30:13,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100951326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:13,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:13,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:13,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674033239] [2022-11-25 22:30:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:13,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:13,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:13,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:13,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:13,903 INFO L87 Difference]: Start difference. First operand 254 states and 327 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:14,533 INFO L93 Difference]: Finished difference Result 546 states and 697 transitions. [2022-11-25 22:30:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:14,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-25 22:30:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:14,541 INFO L225 Difference]: With dead ends: 546 [2022-11-25 22:30:14,541 INFO L226 Difference]: Without dead ends: 295 [2022-11-25 22:30:14,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:14,543 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 11 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:14,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 623 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:30:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-25 22:30:14,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-11-25 22:30:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 280 states have (on average 1.25) internal successors, (350), 286 states have internal predecessors, (350), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:30:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 372 transitions. [2022-11-25 22:30:14,563 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 372 transitions. Word has length 140 [2022-11-25 22:30:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:14,563 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 372 transitions. [2022-11-25 22:30:14,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 372 transitions. [2022-11-25 22:30:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-25 22:30:14,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:14,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:14,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:14,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:14,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:14,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1120622574, now seen corresponding path program 1 times [2022-11-25 22:30:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:14,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006430743] [2022-11-25 22:30:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:14,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:14,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:14,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 22:30:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:16,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:16,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:16,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:16,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:16,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006430743] [2022-11-25 22:30:16,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006430743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:16,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:16,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:30:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500026907] [2022-11-25 22:30:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:16,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:16,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:16,820 INFO L87 Difference]: Start difference. First operand 295 states and 372 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:30:16,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:16,931 INFO L93 Difference]: Finished difference Result 549 states and 705 transitions. [2022-11-25 22:30:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:30:16,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 155 [2022-11-25 22:30:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:16,937 INFO L225 Difference]: With dead ends: 549 [2022-11-25 22:30:16,937 INFO L226 Difference]: Without dead ends: 298 [2022-11-25 22:30:16,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:30:16,942 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:16,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-25 22:30:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-11-25 22:30:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 282 states have (on average 1.25177304964539) internal successors, (353), 289 states have internal predecessors, (353), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-25 22:30:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 377 transitions. [2022-11-25 22:30:16,966 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 377 transitions. Word has length 155 [2022-11-25 22:30:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:16,968 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 377 transitions. [2022-11-25 22:30:16,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:30:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 377 transitions. [2022-11-25 22:30:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-25 22:30:16,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:16,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:17,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:17,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:17,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:17,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash -852886192, now seen corresponding path program 1 times [2022-11-25 22:30:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:17,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360020075] [2022-11-25 22:30:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:17,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:17,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:17,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:17,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 22:30:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:19,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:30:19,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:30:19,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:30:19,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:19,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360020075] [2022-11-25 22:30:19,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360020075] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:19,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2092379283] [2022-11-25 22:30:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:19,362 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:19,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:30:19,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:30:19,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-25 22:30:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:21,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:21,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:30:21,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:21,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2092379283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:21,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:30:21,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-25 22:30:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690448357] [2022-11-25 22:30:21,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:21,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:21,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:30:21,594 INFO L87 Difference]: Start difference. First operand 298 states and 377 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:21,741 INFO L93 Difference]: Finished difference Result 573 states and 737 transitions. [2022-11-25 22:30:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:21,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-11-25 22:30:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:21,744 INFO L225 Difference]: With dead ends: 573 [2022-11-25 22:30:21,745 INFO L226 Difference]: Without dead ends: 319 [2022-11-25 22:30:21,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:30:21,746 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 10 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:21,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 585 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-25 22:30:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2022-11-25 22:30:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 302 states have (on average 1.2350993377483444) internal successors, (373), 309 states have internal predecessors, (373), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-25 22:30:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 397 transitions. [2022-11-25 22:30:21,763 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 397 transitions. Word has length 157 [2022-11-25 22:30:21,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:21,764 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 397 transitions. [2022-11-25 22:30:21,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 397 transitions. [2022-11-25 22:30:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-25 22:30:21,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:21,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:21,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:22,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-11-25 22:30:22,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:22,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash 622348492, now seen corresponding path program 1 times [2022-11-25 22:30:22,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:22,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813025954] [2022-11-25 22:30:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:22,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:22,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:22,224 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:22,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 22:30:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:24,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:30:24,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:30:24,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:30:24,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:24,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813025954] [2022-11-25 22:30:24,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813025954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:24,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [917408474] [2022-11-25 22:30:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:24,474 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:24,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:30:24,476 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:30:24,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-25 22:30:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:26,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:26,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:30:27,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:27,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [917408474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:27,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:30:27,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-25 22:30:27,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476415632] [2022-11-25 22:30:27,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:27,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:27,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:27,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:27,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:30:27,366 INFO L87 Difference]: Start difference. First operand 318 states and 397 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:28,502 INFO L93 Difference]: Finished difference Result 826 states and 1048 transitions. [2022-11-25 22:30:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:28,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-11-25 22:30:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:28,507 INFO L225 Difference]: With dead ends: 826 [2022-11-25 22:30:28,507 INFO L226 Difference]: Without dead ends: 552 [2022-11-25 22:30:28,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:30:28,509 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 227 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:28,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 724 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 22:30:28,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-25 22:30:28,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 550. [2022-11-25 22:30:28,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 525 states have (on average 1.2419047619047618) internal successors, (652), 537 states have internal predecessors, (652), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2022-11-25 22:30:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 696 transitions. [2022-11-25 22:30:28,540 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 696 transitions. Word has length 157 [2022-11-25 22:30:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:28,541 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 696 transitions. [2022-11-25 22:30:28,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 696 transitions. [2022-11-25 22:30:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-25 22:30:28,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:28,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:28,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:28,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:28,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:28,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1130175954, now seen corresponding path program 1 times [2022-11-25 22:30:28,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:28,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112160466] [2022-11-25 22:30:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:28,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:28,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:28,962 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:28,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 22:30:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:31,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:30:31,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:30:31,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:30:31,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:31,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112160466] [2022-11-25 22:30:31,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112160466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:31,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1170773320] [2022-11-25 22:30:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:31,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:31,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:30:31,367 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:30:31,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-25 22:30:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:33,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:33,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 22:30:35,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:35,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1170773320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:35,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:30:35,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-25 22:30:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831497175] [2022-11-25 22:30:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:35,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:30:35,066 INFO L87 Difference]: Start difference. First operand 550 states and 696 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:35,728 INFO L93 Difference]: Finished difference Result 953 states and 1209 transitions. [2022-11-25 22:30:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:35,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 164 [2022-11-25 22:30:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:35,739 INFO L225 Difference]: With dead ends: 953 [2022-11-25 22:30:35,739 INFO L226 Difference]: Without dead ends: 688 [2022-11-25 22:30:35,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:30:35,741 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 90 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:35,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 673 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:30:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-25 22:30:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 686. [2022-11-25 22:30:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 658 states have (on average 1.2446808510638299) internal successors, (819), 670 states have internal predecessors, (819), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-11-25 22:30:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 870 transitions. [2022-11-25 22:30:35,778 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 870 transitions. Word has length 164 [2022-11-25 22:30:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:35,779 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 870 transitions. [2022-11-25 22:30:35,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 870 transitions. [2022-11-25 22:30:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-25 22:30:35,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:35,782 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:35,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:36,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:36,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:36,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:36,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1194831576, now seen corresponding path program 1 times [2022-11-25 22:30:36,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:36,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028162180] [2022-11-25 22:30:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:36,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:36,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:36,211 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:36,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 22:30:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:38,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:30:38,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:30:38,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 22:30:38,310 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028162180] [2022-11-25 22:30:38,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028162180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:38,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1855559088] [2022-11-25 22:30:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:38,311 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:38,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:30:38,313 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:30:38,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-25 22:30:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:40,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:40,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-25 22:30:40,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:40,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1855559088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:40,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:30:40,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-25 22:30:40,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481447666] [2022-11-25 22:30:40,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:40,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:40,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:40,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:30:40,984 INFO L87 Difference]: Start difference. First operand 686 states and 870 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:30:41,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:41,197 INFO L93 Difference]: Finished difference Result 883 states and 1148 transitions. [2022-11-25 22:30:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:30:41,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-11-25 22:30:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:41,202 INFO L225 Difference]: With dead ends: 883 [2022-11-25 22:30:41,202 INFO L226 Difference]: Without dead ends: 720 [2022-11-25 22:30:41,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:30:41,206 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 77 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:41,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 805 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-11-25 22:30:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 713. [2022-11-25 22:30:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 685 states have (on average 1.2131386861313869) internal successors, (831), 697 states have internal predecessors, (831), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-11-25 22:30:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 882 transitions. [2022-11-25 22:30:41,244 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 882 transitions. Word has length 174 [2022-11-25 22:30:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:41,245 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 882 transitions. [2022-11-25 22:30:41,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:30:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 882 transitions. [2022-11-25 22:30:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-25 22:30:41,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:41,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:41,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:41,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:41,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:41,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1105991014, now seen corresponding path program 1 times [2022-11-25 22:30:41,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:41,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068087197] [2022-11-25 22:30:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:41,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:41,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:41,674 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:41,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 22:30:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:43,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:30:43,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:30:43,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 22:30:43,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:43,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068087197] [2022-11-25 22:30:43,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068087197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:43,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1001566562] [2022-11-25 22:30:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:43,837 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:43,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:30:43,839 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:30:43,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-25 22:30:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:46,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:30:46,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:30:46,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:46,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1001566562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:46,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:30:46,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-25 22:30:46,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248337272] [2022-11-25 22:30:46,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:46,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:46,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:30:46,626 INFO L87 Difference]: Start difference. First operand 713 states and 882 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:30:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:46,794 INFO L93 Difference]: Finished difference Result 1288 states and 1608 transitions. [2022-11-25 22:30:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:30:46,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2022-11-25 22:30:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:46,799 INFO L225 Difference]: With dead ends: 1288 [2022-11-25 22:30:46,799 INFO L226 Difference]: Without dead ends: 665 [2022-11-25 22:30:46,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:30:46,801 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 276 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:46,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 869 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-11-25 22:30:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 662. [2022-11-25 22:30:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 634 states have (on average 1.1782334384858044) internal successors, (747), 646 states have internal predecessors, (747), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-11-25 22:30:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 798 transitions. [2022-11-25 22:30:46,838 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 798 transitions. Word has length 174 [2022-11-25 22:30:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:46,839 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 798 transitions. [2022-11-25 22:30:46,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:30:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 798 transitions. [2022-11-25 22:30:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-25 22:30:46,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:46,842 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:46,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:47,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:47,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:47,259 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:47,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1358232908, now seen corresponding path program 1 times [2022-11-25 22:30:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:30:47,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515635756] [2022-11-25 22:30:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:47,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:30:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:30:47,263 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:30:47,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-25 22:30:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:49,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:30:49,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:30:49,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 22:30:49,447 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:49,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515635756] [2022-11-25 22:30:49,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515635756] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:49,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1878799619] [2022-11-25 22:30:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:49,448 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:49,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:30:49,450 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:30:49,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-25 22:30:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:52,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:52,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 22:30:52,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:52,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1878799619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:52,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:30:52,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-25 22:30:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452932437] [2022-11-25 22:30:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:52,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:30:52,840 INFO L87 Difference]: Start difference. First operand 662 states and 798 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:30:55,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 22:30:58,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:00,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:03,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:05,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:06,428 INFO L93 Difference]: Finished difference Result 1448 states and 1752 transitions. [2022-11-25 22:31:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:31:06,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-11-25 22:31:06,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:06,437 INFO L225 Difference]: With dead ends: 1448 [2022-11-25 22:31:06,437 INFO L226 Difference]: Without dead ends: 912 [2022-11-25 22:31:06,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:31:06,439 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 512 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:06,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 609 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 144 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2022-11-25 22:31:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-25 22:31:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 551. [2022-11-25 22:31:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 528 states have (on average 1.1742424242424243) internal successors, (620), 535 states have internal predecessors, (620), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-25 22:31:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 661 transitions. [2022-11-25 22:31:06,512 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 661 transitions. Word has length 174 [2022-11-25 22:31:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:06,513 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 661 transitions. [2022-11-25 22:31:06,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:31:06,513 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 661 transitions. [2022-11-25 22:31:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-25 22:31:06,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:06,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:06,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:06,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:31:06,931 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1943774894, now seen corresponding path program 1 times [2022-11-25 22:31:06,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:31:06,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297779276] [2022-11-25 22:31:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:06,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:31:06,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:31:06,935 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:31:06,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-25 22:31:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:09,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:09,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:31:09,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 22:31:09,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:31:09,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297779276] [2022-11-25 22:31:09,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297779276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:09,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [694583127] [2022-11-25 22:31:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:09,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:31:09,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:31:09,222 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:31:09,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-25 22:31:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:12,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:12,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-25 22:31:12,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:12,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [694583127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:12,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:31:12,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-25 22:31:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859409096] [2022-11-25 22:31:12,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:12,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:31:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:31:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:31:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:31:12,410 INFO L87 Difference]: Start difference. First operand 551 states and 661 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:31:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:12,528 INFO L93 Difference]: Finished difference Result 629 states and 761 transitions. [2022-11-25 22:31:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:31:12,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2022-11-25 22:31:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:12,531 INFO L225 Difference]: With dead ends: 629 [2022-11-25 22:31:12,532 INFO L226 Difference]: Without dead ends: 543 [2022-11-25 22:31:12,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:31:12,533 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 79 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:12,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 766 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:31:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-11-25 22:31:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 539. [2022-11-25 22:31:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 516 states have (on average 1.1647286821705427) internal successors, (601), 523 states have internal predecessors, (601), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-25 22:31:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 642 transitions. [2022-11-25 22:31:12,572 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 642 transitions. Word has length 181 [2022-11-25 22:31:12,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:12,573 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 642 transitions. [2022-11-25 22:31:12,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:31:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 642 transitions. [2022-11-25 22:31:12,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-25 22:31:12,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:12,576 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:12,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:12,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:12,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:31:12,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:13,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:13,000 INFO L85 PathProgramCache]: Analyzing trace with hash -34971296, now seen corresponding path program 1 times [2022-11-25 22:31:13,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:31:13,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145760409] [2022-11-25 22:31:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:13,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:31:13,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:31:13,002 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:31:13,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-25 22:31:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:15,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:15,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:31:15,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 22:31:15,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:31:15,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145760409] [2022-11-25 22:31:15,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145760409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:15,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [939778235] [2022-11-25 22:31:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:15,425 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:31:15,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:31:15,426 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:31:15,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-25 22:31:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:19,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:19,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:31:19,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 22:31:19,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [939778235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:19,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103737912] [2022-11-25 22:31:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:19,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:19,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:19,570 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:19,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-25 22:31:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:21,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:31:21,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 22:31:22,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 22:31:22,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103737912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:22,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:31:22,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2022-11-25 22:31:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646646953] [2022-11-25 22:31:22,575 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:31:22,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:31:22,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:31:22,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:31:22,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:31:22,578 INFO L87 Difference]: Start difference. First operand 539 states and 642 transitions. Second operand has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 22:31:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:24,328 INFO L93 Difference]: Finished difference Result 1835 states and 2262 transitions. [2022-11-25 22:31:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 22:31:24,330 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 181 [2022-11-25 22:31:24,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:24,337 INFO L225 Difference]: With dead ends: 1835 [2022-11-25 22:31:24,337 INFO L226 Difference]: Without dead ends: 1343 [2022-11-25 22:31:24,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-25 22:31:24,342 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1313 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:24,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 2274 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 22:31:24,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-11-25 22:31:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1205. [2022-11-25 22:31:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1160 states have (on average 1.1741379310344828) internal successors, (1362), 1167 states have internal predecessors, (1362), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-11-25 22:31:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1454 transitions. [2022-11-25 22:31:24,429 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1454 transitions. Word has length 181 [2022-11-25 22:31:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:24,429 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1454 transitions. [2022-11-25 22:31:24,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 22:31:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1454 transitions. [2022-11-25 22:31:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-25 22:31:24,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:24,442 INFO L195 NwaCegarLoop]: trace histogram [12, 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, 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, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:24,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:24,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:24,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:25,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:31:25,069 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:25,070 INFO L85 PathProgramCache]: Analyzing trace with hash -708936254, now seen corresponding path program 1 times [2022-11-25 22:31:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:31:25,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005718514] [2022-11-25 22:31:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:25,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:31:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:31:25,073 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:31:25,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-25 22:31:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:35,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:31:35,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-25 22:31:35,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-11-25 22:31:35,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:31:35,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005718514] [2022-11-25 22:31:35,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005718514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:35,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1452823136] [2022-11-25 22:31:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:35,988 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:31:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:31:35,991 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:31:35,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-25 22:31:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:48,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:31:48,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-25 22:31:48,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-11-25 22:31:48,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1452823136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:48,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130728100] [2022-11-25 22:31:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:48,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:48,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:48,207 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:48,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-25 22:31:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:58,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:31:58,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-25 22:31:58,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-11-25 22:31:59,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130728100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:59,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:31:59,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-11-25 22:31:59,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568009676] [2022-11-25 22:31:59,180 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:31:59,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 22:31:59,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:31:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 22:31:59,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-25 22:31:59,184 INFO L87 Difference]: Start difference. First operand 1205 states and 1454 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-25 22:32:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:32:00,934 INFO L93 Difference]: Finished difference Result 2389 states and 3017 transitions. [2022-11-25 22:32:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 22:32:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 483 [2022-11-25 22:32:00,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:32:00,940 INFO L225 Difference]: With dead ends: 2389 [2022-11-25 22:32:00,941 INFO L226 Difference]: Without dead ends: 1225 [2022-11-25 22:32:00,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2874 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2022-11-25 22:32:00,944 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 40 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:32:00,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2548 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:32:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-11-25 22:32:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1217. [2022-11-25 22:32:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1172 states have (on average 1.1757679180887373) internal successors, (1378), 1179 states have internal predecessors, (1378), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-11-25 22:32:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1470 transitions. [2022-11-25 22:32:01,027 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1470 transitions. Word has length 483 [2022-11-25 22:32:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:32:01,027 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1470 transitions. [2022-11-25 22:32:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-25 22:32:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1470 transitions. [2022-11-25 22:32:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-25 22:32:01,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:01,041 INFO L195 NwaCegarLoop]: trace histogram [36, 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, 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, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:01,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:01,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:01,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:01,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:32:01,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1754575422, now seen corresponding path program 2 times [2022-11-25 22:32:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:32:01,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260538044] [2022-11-25 22:32:01,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:32:01,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:32:01,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:32:01,667 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:32:01,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-25 22:32:13,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:32:13,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:32:13,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 22:32:13,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-25 22:32:14,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-11-25 22:32:14,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:32:14,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260538044] [2022-11-25 22:32:14,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260538044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:32:14,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [65192017] [2022-11-25 22:32:14,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:32:14,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:32:14,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:32:14,858 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:32:14,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-25 22:32:29,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:32:29,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:32:29,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 22:32:29,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-25 22:32:29,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-11-25 22:32:29,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [65192017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:32:29,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320287691] [2022-11-25 22:32:29,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:32:29,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:32:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:32:29,858 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:32:29,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-25 22:32:41,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:32:41,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:32:41,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:32:41,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-25 22:32:42,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-25 22:32:44,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320287691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:32:44,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:32:44,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2022-11-25 22:32:44,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345160528] [2022-11-25 22:32:44,726 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:32:44,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-25 22:32:44,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:32:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-25 22:32:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2022-11-25 22:32:44,732 INFO L87 Difference]: Start difference. First operand 1217 states and 1470 transitions. Second operand has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 22:33:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:06,158 INFO L93 Difference]: Finished difference Result 4750 states and 6231 transitions. [2022-11-25 22:33:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-25 22:33:06,160 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 507 [2022-11-25 22:33:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:06,174 INFO L225 Difference]: With dead ends: 4750 [2022-11-25 22:33:06,174 INFO L226 Difference]: Without dead ends: 3576 [2022-11-25 22:33:06,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3075 GetRequests, 3006 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2022-11-25 22:33:06,180 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 4440 mSDsluCounter, 20591 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 1448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4612 SdHoareTripleChecker+Valid, 21822 SdHoareTripleChecker+Invalid, 6571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1448 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:06,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4612 Valid, 21822 Invalid, 6571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1448 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2022-11-25 22:33:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-11-25 22:33:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3218. [2022-11-25 22:33:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3113 states have (on average 1.1692900738837135) internal successors, (3640), 3120 states have internal predecessors, (3640), 99 states have call successors, (99), 3 states have call predecessors, (99), 4 states have return successors, (137), 95 states have call predecessors, (137), 99 states have call successors, (137) [2022-11-25 22:33:06,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 3876 transitions. [2022-11-25 22:33:06,472 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 3876 transitions. Word has length 507 [2022-11-25 22:33:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:06,473 INFO L495 AbstractCegarLoop]: Abstraction has 3218 states and 3876 transitions. [2022-11-25 22:33:06,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 22:33:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 3876 transitions. [2022-11-25 22:33:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2022-11-25 22:33:06,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:06,493 INFO L195 NwaCegarLoop]: trace histogram [66, 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, 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, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:06,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-25 22:33:06,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-25 22:33:07,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-25 22:33:07,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:33:07,102 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1181150768, now seen corresponding path program 3 times [2022-11-25 22:33:07,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:33:07,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762826369] [2022-11-25 22:33:07,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:33:07,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:33:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:33:07,108 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:33:07,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d94ebc-25f0-466f-9e00-3405d3765a56/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process