./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V --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 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:26:23,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:26:23,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:26:23,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:26:23,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:26:23,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:26:23,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:26:23,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:26:23,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:26:23,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:26:23,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:26:23,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:26:23,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:26:23,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:26:23,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:26:23,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:26:23,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:26:23,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:26:23,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:26:23,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:26:23,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:26:23,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:26:23,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:26:23,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:26:23,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:26:23,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:26:23,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:26:23,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:26:23,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:26:23,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:26:23,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:26:23,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:26:23,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:26:23,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:26:23,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:26:23,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:26:23,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:26:23,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:26:23,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:26:23,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:26:23,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:26:23,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:26:23,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:26:23,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:26:23,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:26:23,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:26:23,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:26:23,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:26:23,209 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:26:23,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:26:23,209 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:26:23,210 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:26:23,211 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:26:23,211 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:26:23,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:26:23,212 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:26:23,212 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:26:23,212 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:26:23,212 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:26:23,212 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:26:23,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:26:23,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:26:23,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:26:23,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:26:23,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:26:23,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:26:23,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:26:23,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:26:23,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:26:23,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:26:23,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:26:23,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:26:23,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:26:23,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:26:23,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:23,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:26:23,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:26:23,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:26:23,218 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:26:23,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:26:23,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:26:23,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:26:23,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:26:23,219 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2021-11-23 02:26:23,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:26:23,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:26:23,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:26:23,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:26:23,552 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:26:23,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-23 02:26:23,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/data/e87b34179/6bf0640a7162473391b549c207d9baf1/FLAGf56c071bd [2021-11-23 02:26:24,268 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:26:24,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-23 02:26:24,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/data/e87b34179/6bf0640a7162473391b549c207d9baf1/FLAGf56c071bd [2021-11-23 02:26:24,461 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/data/e87b34179/6bf0640a7162473391b549c207d9baf1 [2021-11-23 02:26:24,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:26:24,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:26:24,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:24,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:26:24,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:26:24,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:24" (1/1) ... [2021-11-23 02:26:24,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd8ec0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24, skipping insertion in model container [2021-11-23 02:26:24,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:24" (1/1) ... [2021-11-23 02:26:24,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:26:24,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:26:24,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-23 02:26:25,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-23 02:26:25,059 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-23 02:26:25,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:25,084 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:26:25,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-23 02:26:25,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-23 02:26:25,199 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-23 02:26:25,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:25,292 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:26:25,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25 WrapperNode [2021-11-23 02:26:25,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:25,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:25,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:26:25,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:26:25,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,444 INFO L137 Inliner]: procedures = 176, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-11-23 02:26:25,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:25,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:26:25,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:26:25,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:26:25,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:26:25,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:26:25,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:26:25,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:26:25,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (1/1) ... [2021-11-23 02:26:25,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:25,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:26:25,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:26:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:26:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:26:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:26:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:26:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:26:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:26:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:26:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:26:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:26:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:26:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:26:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:26:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:26:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:26:25,920 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:26:25,921 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:26:27,017 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:26:27,484 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:26:27,484 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-23 02:26:27,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:27 BoogieIcfgContainer [2021-11-23 02:26:27,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:26:27,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:26:27,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:26:27,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:26:27,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:24" (1/3) ... [2021-11-23 02:26:27,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3351bc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:27, skipping insertion in model container [2021-11-23 02:26:27,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:25" (2/3) ... [2021-11-23 02:26:27,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3351bc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:27, skipping insertion in model container [2021-11-23 02:26:27,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:27" (3/3) ... [2021-11-23 02:26:27,500 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-2.i [2021-11-23 02:26:27,507 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:26:27,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:26:27,570 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:26:27,586 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:26:27,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 02:26:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 115 states have (on average 1.808695652173913) internal successors, (208), 117 states have internal predecessors, (208), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:26:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:26:27,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:27,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:27,619 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:27,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:27,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2062520436, now seen corresponding path program 1 times [2021-11-23 02:26:27,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:27,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069256429] [2021-11-23 02:26:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:27,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:27,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:27,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069256429] [2021-11-23 02:26:27,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069256429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:27,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:27,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:26:27,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886525625] [2021-11-23 02:26:27,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:27,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:26:27,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:26:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:26:27,823 INFO L87 Difference]: Start difference. First operand has 122 states, 115 states have (on average 1.808695652173913) internal successors, (208), 117 states have internal predecessors, (208), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:28,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:28,810 INFO L93 Difference]: Finished difference Result 243 states and 427 transitions. [2021-11-23 02:26:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:26:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:26:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:28,837 INFO L225 Difference]: With dead ends: 243 [2021-11-23 02:26:28,837 INFO L226 Difference]: Without dead ends: 107 [2021-11-23 02:26:28,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:26:28,850 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:28,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:26:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-23 02:26:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-23 02:26:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:26:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2021-11-23 02:26:28,905 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 7 [2021-11-23 02:26:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:28,905 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2021-11-23 02:26:28,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2021-11-23 02:26:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:26:28,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:28,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:28,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:26:28,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:28,908 INFO L85 PathProgramCache]: Analyzing trace with hash -75086937, now seen corresponding path program 1 times [2021-11-23 02:26:28,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:28,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62109735] [2021-11-23 02:26:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:28,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:28,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:28,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62109735] [2021-11-23 02:26:28,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62109735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:28,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:28,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:28,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183877470] [2021-11-23 02:26:28,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:28,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:26:28,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:26:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:26:28,989 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-23 02:26:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:30,363 INFO L93 Difference]: Finished difference Result 219 states and 256 transitions. [2021-11-23 02:26:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:26:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-11-23 02:26:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:30,373 INFO L225 Difference]: With dead ends: 219 [2021-11-23 02:26:30,373 INFO L226 Difference]: Without dead ends: 165 [2021-11-23 02:26:30,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:26:30,376 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 63 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:30,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 285 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:26:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-23 02:26:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 109. [2021-11-23 02:26:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:26:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2021-11-23 02:26:30,410 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 9 [2021-11-23 02:26:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:30,410 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2021-11-23 02:26:30,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-23 02:26:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2021-11-23 02:26:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 02:26:30,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:30,412 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:26:30,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:26:30,413 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash -135765108, now seen corresponding path program 1 times [2021-11-23 02:26:30,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:30,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108390466] [2021-11-23 02:26:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:30,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:30,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:26:30,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909521463] [2021-11-23 02:26:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:30,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:30,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:30,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:30,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:26:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:30,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:26:30,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:30,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:26:30,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:30,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108390466] [2021-11-23 02:26:30,798 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:26:30,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909521463] [2021-11-23 02:26:30,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909521463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:30,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:30,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:26:30,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762583697] [2021-11-23 02:26:30,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:30,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:30,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:30,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:30,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:30,800 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-11-23 02:26:32,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:26:32,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:32,803 INFO L93 Difference]: Finished difference Result 265 states and 307 transitions. [2021-11-23 02:26:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:32,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-11-23 02:26:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:32,821 INFO L225 Difference]: With dead ends: 265 [2021-11-23 02:26:32,821 INFO L226 Difference]: Without dead ends: 159 [2021-11-23 02:26:32,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:32,823 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 48 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:32,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 208 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 02:26:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-23 02:26:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2021-11-23 02:26:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 147 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:26:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2021-11-23 02:26:32,839 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 33 [2021-11-23 02:26:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:32,840 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2021-11-23 02:26:32,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-11-23 02:26:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2021-11-23 02:26:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:26:32,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:32,842 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:26:32,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:26:33,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:33,055 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2033909546, now seen corresponding path program 1 times [2021-11-23 02:26:33,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:33,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753371453] [2021-11-23 02:26:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:33,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:33,075 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:26:33,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126680071] [2021-11-23 02:26:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:33,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:33,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:33,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:33,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:26:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:26:33,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:33,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:26:33,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:26:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:26:33,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:26:33,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:33,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753371453] [2021-11-23 02:26:33,524 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:26:33,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126680071] [2021-11-23 02:26:33,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126680071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:33,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:33,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:26:33,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636884572] [2021-11-23 02:26:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:33,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:26:33,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:26:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:26:33,526 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-11-23 02:26:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:34,721 INFO L93 Difference]: Finished difference Result 201 states and 235 transitions. [2021-11-23 02:26:34,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:26:34,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 46 [2021-11-23 02:26:34,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:34,733 INFO L225 Difference]: With dead ends: 201 [2021-11-23 02:26:34,733 INFO L226 Difference]: Without dead ends: 197 [2021-11-23 02:26:34,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:26:34,734 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 58 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:34,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 283 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 02:26:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-23 02:26:34,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 154. [2021-11-23 02:26:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.162162162162162) internal successors, (172), 149 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:26:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2021-11-23 02:26:34,749 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 46 [2021-11-23 02:26:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:34,750 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2021-11-23 02:26:34,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-11-23 02:26:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2021-11-23 02:26:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 02:26:34,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:34,753 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:26:34,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:26:34,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 02:26:34,967 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:34,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash 340221349, now seen corresponding path program 1 times [2021-11-23 02:26:34,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832755030] [2021-11-23 02:26:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:34,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:34,980 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:26:34,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900867131] [2021-11-23 02:26:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:34,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:34,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:34,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:34,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:26:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:35,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:26:35,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:26:35,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:26:35,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832755030] [2021-11-23 02:26:35,371 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:26:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900867131] [2021-11-23 02:26:35,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900867131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:35,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:35,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:26:35,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690103012] [2021-11-23 02:26:35,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:35,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:26:35,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:35,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:26:35,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:26:35,374 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-23 02:26:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:35,989 INFO L93 Difference]: Finished difference Result 344 states and 400 transitions. [2021-11-23 02:26:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:26:35,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 57 [2021-11-23 02:26:35,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:35,996 INFO L225 Difference]: With dead ends: 344 [2021-11-23 02:26:35,996 INFO L226 Difference]: Without dead ends: 206 [2021-11-23 02:26:35,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:26:35,998 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 227 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:35,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 175 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 02:26:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-23 02:26:36,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 199. [2021-11-23 02:26:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 193 states have (on average 1.1709844559585492) internal successors, (226), 194 states have internal predecessors, (226), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:26:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 232 transitions. [2021-11-23 02:26:36,018 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 232 transitions. Word has length 57 [2021-11-23 02:26:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:36,019 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 232 transitions. [2021-11-23 02:26:36,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-23 02:26:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 232 transitions. [2021-11-23 02:26:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 02:26:36,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:36,022 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:26:36,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:26:36,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:36,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash -105684312, now seen corresponding path program 1 times [2021-11-23 02:26:36,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:36,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114083822] [2021-11-23 02:26:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:36,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:36,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:26:36,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842846257] [2021-11-23 02:26:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:36,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:36,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:36,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:36,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:26:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:37,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:26:37,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:26:38,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:26:38,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:38,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114083822] [2021-11-23 02:26:38,046 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:26:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842846257] [2021-11-23 02:26:38,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842846257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:38,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:38,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:26:38,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539369524] [2021-11-23 02:26:38,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:38,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:26:38,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:26:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:26:38,048 INFO L87 Difference]: Start difference. First operand 199 states and 232 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:26:41,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:26:41,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:41,182 INFO L93 Difference]: Finished difference Result 381 states and 448 transitions. [2021-11-23 02:26:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:26:41,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2021-11-23 02:26:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:41,207 INFO L225 Difference]: With dead ends: 381 [2021-11-23 02:26:41,208 INFO L226 Difference]: Without dead ends: 201 [2021-11-23 02:26:41,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:26:41,209 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 1 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:41,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 317 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 02:26:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-23 02:26:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-23 02:26:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 194 states have (on average 1.175257731958763) internal successors, (228), 196 states have internal predecessors, (228), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:26:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2021-11-23 02:26:41,224 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 64 [2021-11-23 02:26:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:41,225 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2021-11-23 02:26:41,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:26:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2021-11-23 02:26:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:26:41,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:41,229 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:26:41,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:26:41,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:41,443 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1390713772, now seen corresponding path program 1 times [2021-11-23 02:26:41,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:41,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532885419] [2021-11-23 02:26:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:41,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:41,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:26:41,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632839251] [2021-11-23 02:26:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:41,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:41,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:41,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:41,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4569a283-30c0-4b57-9854-d35146573d1b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:27:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:06,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:27:06,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:27:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:27:06,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:27:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:27:06,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532885419] [2021-11-23 02:27:06,596 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:27:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632839251] [2021-11-23 02:27:06,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632839251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:27:06,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [880546279] [2021-11-23 02:27:06,624 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 02:27:06,624 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:27:06,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:27:06,636 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:27:06,637 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:27:06,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 02:27:06,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:27:06,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,840 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:27:06,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:27:06,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:27:06,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:27:06,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:27:06,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:27:06,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,971 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:27:06,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:27:06,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:06,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:27:06,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 49 [2021-11-23 02:27:07,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:27:07,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-23 02:27:07,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-23 02:27:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:27:07,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-23 02:27:07,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-23 02:27:07,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:27:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:27:07,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-23 02:27:07,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 110 treesize of output 115 [2021-11-23 02:27:07,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,756 INFO L354 Elim1Store]: treesize reduction 104, result has 16.8 percent of original size [2021-11-23 02:27:07,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 127 treesize of output 138 [2021-11-23 02:27:07,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,845 INFO L354 Elim1Store]: treesize reduction 200, result has 11.5 percent of original size [2021-11-23 02:27:07,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 126 treesize of output 132 [2021-11-23 02:27:07,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:07,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:27:08,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:27:08,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:27:08,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:27:08,050 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-23 02:27:08,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 98 treesize of output 97 [2021-11-23 02:27:08,074 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-23 02:27:08,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 94 treesize of output 93 [2021-11-23 02:27:08,099 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-23 02:27:08,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 90 treesize of output 89 [2021-11-23 02:27:08,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:27:08,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:27:08,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:27:08,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-23 02:27:08,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 78 treesize of output 30 [2021-11-23 02:27:08,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 16 [2021-11-23 02:27:08,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 16 [2021-11-23 02:27:08,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-23 02:27:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:08,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 78 treesize of output 30 [2021-11-23 02:27:13,924 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:27:13,926 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-23 02:27:13,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2851 treesize of output 2328 [2021-11-23 02:27:13,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:25,768 WARN L227 SmtUtils]: Spent 11.80s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:27:25,769 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-23 02:27:25,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2952 treesize of output 2670 [2021-11-23 02:27:37,324 WARN L227 SmtUtils]: Spent 11.44s on a formula simplification. DAG size of input: 251 DAG size of output: 142 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:27:37,325 INFO L354 Elim1Store]: treesize reduction 2750, result has 29.6 percent of original size [2021-11-23 02:27:37,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2920 treesize of output 2690 [2021-11-23 02:27:37,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:37,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:39,372 INFO L354 Elim1Store]: treesize reduction 156, result has 23.2 percent of original size [2021-11-23 02:27:39,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 25958 treesize of output 25989 [2021-11-23 02:27:39,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:39,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:40,225 INFO L354 Elim1Store]: treesize reduction 102, result has 20.3 percent of original size [2021-11-23 02:27:40,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 25968 treesize of output 25982 [2021-11-23 02:27:40,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:41,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:41,144 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 02:27:41,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 32 [2021-11-23 02:27:41,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:41,492 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:27:41,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 61 [2021-11-23 02:27:41,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:41,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:27:41,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-23 02:27:41,706 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:41,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,057 INFO L354 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2021-11-23 02:27:42,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 46 [2021-11-23 02:27:42,282 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:42,369 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:42,481 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:42,534 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:42,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:27:42,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:27:42,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:27:42,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:42,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:27:42,869 INFO L244 Elim1Store]: Index analysis took 129 ms [2021-11-23 02:27:42,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 2693 treesize of output 2239 [2021-11-23 02:27:43,015 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,102 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,188 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,434 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,523 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,584 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,818 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,911 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:43,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:44,078 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:44,155 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:44,231 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:44,326 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:44,420 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:44,499 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:44,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:44,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:27:45,025 INFO L244 Elim1Store]: Index analysis took 216 ms [2021-11-23 02:27:45,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:46,454 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:27:46,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 4032 treesize of output 5420 [2021-11-23 02:29:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,119 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:29:54,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 42 [2021-11-23 02:29:54,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,639 INFO L354 Elim1Store]: treesize reduction 20, result has 53.5 percent of original size [2021-11-23 02:29:54,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 67 [2021-11-23 02:29:54,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:29:54,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:29:54,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 45 [2021-11-23 02:30:09,702 WARN L227 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 369 DAG size of output: 367 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:30:19,403 WARN L227 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 361 DAG size of output: 361 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:31:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver