./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0232-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0232-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01db24b1589b54f78ea9acc56548e9023dc94ca9b67a9629bccf00110df292f7 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:07:23,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:07:23,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:07:23,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:07:23,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:07:23,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:07:23,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:07:23,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:07:23,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:07:23,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:07:23,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:07:23,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:07:23,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:07:23,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:07:23,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:07:23,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:07:23,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:07:23,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:07:23,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:07:23,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:07:23,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:07:23,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:07:23,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:07:23,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:07:23,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:07:23,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:07:23,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:07:23,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:07:23,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:07:23,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:07:23,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:07:23,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:07:23,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:07:23,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:07:23,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:07:23,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:07:23,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:07:23,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:07:23,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:07:23,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:07:23,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:07:23,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 20:07:23,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:07:23,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:07:23,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:07:23,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:07:23,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:07:23,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:07:23,365 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:07:23,365 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:07:23,365 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:07:23,365 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:07:23,365 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:07:23,366 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:07:23,366 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:07:23,366 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:07:23,371 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:07:23,371 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:07:23,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:07:23,372 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:07:23,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 20:07:23,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 20:07:23,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:07:23,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:07:23,373 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:07:23,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:07:23,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:07:23,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:07:23,375 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 20:07:23,376 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 20:07:23,376 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 20:07:23,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:07:23,377 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:07:23,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:07:23,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:07:23,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:07:23,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:07:23,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:07:23,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:07:23,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:07:23,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:07:23,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:07:23,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:07:23,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:07:23,380 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_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01db24b1589b54f78ea9acc56548e9023dc94ca9b67a9629bccf00110df292f7 [2021-11-25 20:07:23,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:07:23,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:07:23,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:07:23,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:07:23,691 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:07:23,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/memsafety/test-0232-3.i [2021-11-25 20:07:23,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/data/19fbba523/0ea1e1805219421298b01581d85c22a2/FLAGb502edc27 [2021-11-25 20:07:24,338 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:07:24,338 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/sv-benchmarks/c/memsafety/test-0232-3.i [2021-11-25 20:07:24,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/data/19fbba523/0ea1e1805219421298b01581d85c22a2/FLAGb502edc27 [2021-11-25 20:07:24,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/data/19fbba523/0ea1e1805219421298b01581d85c22a2 [2021-11-25 20:07:24,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:07:24,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:07:24,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:07:24,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:07:24,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:07:24,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:07:24" (1/1) ... [2021-11-25 20:07:24,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7b8e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:24, skipping insertion in model container [2021-11-25 20:07:24,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:07:24" (1/1) ... [2021-11-25 20:07:24,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:07:24,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:07:25,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:07:25,007 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:07:25,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:07:25,078 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:07:25,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25 WrapperNode [2021-11-25 20:07:25,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:07:25,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:07:25,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:07:25,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:07:25,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,122 INFO L137 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2021-11-25 20:07:25,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:07:25,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:07:25,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:07:25,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:07:25,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:07:25,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:07:25,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:07:25,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:07:25,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (1/1) ... [2021-11-25 20:07:25,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:07:25,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:07:25,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:07:25,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:07:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:07:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:07:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:07:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:07:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:07:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:07:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:07:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:07:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:07:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:07:25,391 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:07:25,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:07:25,786 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:07:25,827 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:07:25,828 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 20:07:25,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:07:25 BoogieIcfgContainer [2021-11-25 20:07:25,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:07:25,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:07:25,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:07:25,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:07:25,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:07:24" (1/3) ... [2021-11-25 20:07:25,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a7703e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:07:25, skipping insertion in model container [2021-11-25 20:07:25,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:25" (2/3) ... [2021-11-25 20:07:25,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a7703e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:07:25, skipping insertion in model container [2021-11-25 20:07:25,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:07:25" (3/3) ... [2021-11-25 20:07:25,843 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0232-3.i [2021-11-25 20:07:25,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:07:25,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-11-25 20:07:25,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:07:25,929 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-25 20:07:25,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-11-25 20:07:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 97 states have internal predecessors, (104), 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) [2021-11-25 20:07:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 20:07:25,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:25,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 20:07:25,966 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash 175096, now seen corresponding path program 1 times [2021-11-25 20:07:25,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:25,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328263547] [2021-11-25 20:07:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:25,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:26,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:26,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328263547] [2021-11-25 20:07:26,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328263547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:26,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:26,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:07:26,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39565496] [2021-11-25 20:07:26,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:26,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:07:26,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:07:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:07:26,301 INFO L87 Difference]: Start difference. First operand has 98 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 97 states have internal predecessors, (104), 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:26,566 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2021-11-25 20:07:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:07:26,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 20:07:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:26,579 INFO L225 Difference]: With dead ends: 122 [2021-11-25 20:07:26,579 INFO L226 Difference]: Without dead ends: 121 [2021-11-25 20:07:26,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:07:26,586 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 170 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:26,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 67 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:07:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-25 20:07:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 90. [2021-11-25 20:07:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 89 states have internal predecessors, (95), 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) [2021-11-25 20:07:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-11-25 20:07:26,635 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 3 [2021-11-25 20:07:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:26,636 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-11-25 20:07:26,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-11-25 20:07:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 20:07:26,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:26,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 20:07:26,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:07:26,639 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:26,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash 175097, now seen corresponding path program 1 times [2021-11-25 20:07:26,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:26,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459107549] [2021-11-25 20:07:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:26,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:26,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:26,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459107549] [2021-11-25 20:07:26,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459107549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:26,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:26,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:07:26,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601944574] [2021-11-25 20:07:26,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:26,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:07:26,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:07:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:07:26,790 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:26,921 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2021-11-25 20:07:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:07:26,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 20:07:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:26,925 INFO L225 Difference]: With dead ends: 79 [2021-11-25 20:07:26,925 INFO L226 Difference]: Without dead ends: 79 [2021-11-25 20:07:26,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:07:26,931 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 153 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:26,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 36 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:26,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-25 20:07:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-11-25 20:07:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 77 states have internal predecessors, (82), 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) [2021-11-25 20:07:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-11-25 20:07:26,952 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 3 [2021-11-25 20:07:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:26,953 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-11-25 20:07:26,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-11-25 20:07:26,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 20:07:26,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:26,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 20:07:26,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:07:26,957 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:26,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:26,958 INFO L85 PathProgramCache]: Analyzing trace with hash 5427956, now seen corresponding path program 1 times [2021-11-25 20:07:26,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:26,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622300042] [2021-11-25 20:07:26,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:26,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:27,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:27,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622300042] [2021-11-25 20:07:27,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622300042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:27,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:27,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:07:27,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077157945] [2021-11-25 20:07:27,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:27,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:07:27,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:07:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:27,020 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:27,113 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2021-11-25 20:07:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:07:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 20:07:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:27,118 INFO L225 Difference]: With dead ends: 100 [2021-11-25 20:07:27,118 INFO L226 Difference]: Without dead ends: 100 [2021-11-25 20:07:27,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:27,126 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 55 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:27,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 59 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-25 20:07:27,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2021-11-25 20:07:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 43 states have (on average 1.813953488372093) internal successors, (78), 73 states have internal predecessors, (78), 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) [2021-11-25 20:07:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-11-25 20:07:27,137 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 4 [2021-11-25 20:07:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:27,137 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-11-25 20:07:27,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-11-25 20:07:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 20:07:27,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:27,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 20:07:27,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:07:27,139 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 5427957, now seen corresponding path program 1 times [2021-11-25 20:07:27,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502305428] [2021-11-25 20:07:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:27,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:27,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:27,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502305428] [2021-11-25 20:07:27,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502305428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:27,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:27,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:07:27,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862229929] [2021-11-25 20:07:27,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:27,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:07:27,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:07:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:27,215 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:27,273 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-11-25 20:07:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:07:27,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 20:07:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:27,274 INFO L225 Difference]: With dead ends: 71 [2021-11-25 20:07:27,274 INFO L226 Difference]: Without dead ends: 71 [2021-11-25 20:07:27,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:27,281 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:27,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 45 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:27,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-25 20:07:27,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-11-25 20:07:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 69 states have internal predecessors, (74), 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) [2021-11-25 20:07:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-11-25 20:07:27,292 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 4 [2021-11-25 20:07:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:27,293 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-11-25 20:07:27,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-11-25 20:07:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 20:07:27,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:27,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:27,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:07:27,294 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 732400519, now seen corresponding path program 1 times [2021-11-25 20:07:27,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:27,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534106989] [2021-11-25 20:07:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:27,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:27,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:27,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534106989] [2021-11-25 20:07:27,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534106989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:27,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:27,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:07:27,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648960397] [2021-11-25 20:07:27,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:27,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:07:27,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:27,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:07:27,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:07:27,437 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:27,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:27,618 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-11-25 20:07:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:07:27,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 20:07:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:27,623 INFO L225 Difference]: With dead ends: 78 [2021-11-25 20:07:27,624 INFO L226 Difference]: Without dead ends: 78 [2021-11-25 20:07:27,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:07:27,625 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 10 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:27,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 330 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-25 20:07:27,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2021-11-25 20:07:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 74 states have internal predecessors, (79), 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) [2021-11-25 20:07:27,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-25 20:07:27,640 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 8 [2021-11-25 20:07:27,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:27,641 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-25 20:07:27,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-25 20:07:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:07:27,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:27,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:27,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:07:27,642 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1961056907, now seen corresponding path program 1 times [2021-11-25 20:07:27,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:27,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059238401] [2021-11-25 20:07:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:27,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:27,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:27,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059238401] [2021-11-25 20:07:27,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059238401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:27,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:27,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:07:27,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373851271] [2021-11-25 20:07:27,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:27,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:07:27,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:07:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:07:27,722 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-25 20:07:27,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:27,860 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2021-11-25 20:07:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:07:27,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2021-11-25 20:07:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:27,861 INFO L225 Difference]: With dead ends: 99 [2021-11-25 20:07:27,861 INFO L226 Difference]: Without dead ends: 99 [2021-11-25 20:07:27,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:07:27,862 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 128 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:27,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 101 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-25 20:07:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2021-11-25 20:07:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.625) internal successors, (78), 73 states have internal predecessors, (78), 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) [2021-11-25 20:07:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-11-25 20:07:27,866 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 13 [2021-11-25 20:07:27,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:27,866 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-11-25 20:07:27,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-25 20:07:27,867 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-11-25 20:07:27,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:07:27,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:27,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:27,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:07:27,868 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:27,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1961056908, now seen corresponding path program 1 times [2021-11-25 20:07:27,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:27,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915696079] [2021-11-25 20:07:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:27,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:27,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:27,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915696079] [2021-11-25 20:07:27,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915696079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:27,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:27,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:07:27,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305711341] [2021-11-25 20:07:27,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:28,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:07:28,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:28,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:07:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:07:28,001 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-25 20:07:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:28,135 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2021-11-25 20:07:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:07:28,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2021-11-25 20:07:28,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:28,136 INFO L225 Difference]: With dead ends: 102 [2021-11-25 20:07:28,136 INFO L226 Difference]: Without dead ends: 102 [2021-11-25 20:07:28,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:07:28,137 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 143 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:28,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 100 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-25 20:07:28,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 73. [2021-11-25 20:07:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 72 states have internal predecessors, (77), 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) [2021-11-25 20:07:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-11-25 20:07:28,141 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 13 [2021-11-25 20:07:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:28,141 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-11-25 20:07:28,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-25 20:07:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-11-25 20:07:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:07:28,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:28,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:28,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:07:28,147 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash -914867800, now seen corresponding path program 1 times [2021-11-25 20:07:28,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:28,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412198946] [2021-11-25 20:07:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:28,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:28,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:28,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412198946] [2021-11-25 20:07:28,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412198946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:28,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:28,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:07:28,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174014341] [2021-11-25 20:07:28,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:28,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:07:28,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:07:28,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:07:28,238 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 20:07:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:28,327 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-11-25 20:07:28,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:07:28,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-11-25 20:07:28,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:28,328 INFO L225 Difference]: With dead ends: 72 [2021-11-25 20:07:28,328 INFO L226 Difference]: Without dead ends: 72 [2021-11-25 20:07:28,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:07:28,330 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 15 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:28,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 145 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-25 20:07:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-25 20:07:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 71 states have internal predecessors, (76), 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) [2021-11-25 20:07:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-11-25 20:07:28,335 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 15 [2021-11-25 20:07:28,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:28,335 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-11-25 20:07:28,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 20:07:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-11-25 20:07:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:07:28,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:28,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:28,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:07:28,338 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:28,338 INFO L85 PathProgramCache]: Analyzing trace with hash -914867799, now seen corresponding path program 1 times [2021-11-25 20:07:28,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:28,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613667588] [2021-11-25 20:07:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:28,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:28,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:28,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613667588] [2021-11-25 20:07:28,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613667588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:28,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:28,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:07:28,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599734203] [2021-11-25 20:07:28,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:28,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:07:28,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:28,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:07:28,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:07:28,550 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-11-25 20:07:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:28,736 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2021-11-25 20:07:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:07:28,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2021-11-25 20:07:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:28,738 INFO L225 Difference]: With dead ends: 100 [2021-11-25 20:07:28,738 INFO L226 Difference]: Without dead ends: 100 [2021-11-25 20:07:28,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:07:28,739 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 234 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:28,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 149 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-25 20:07:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2021-11-25 20:07:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.5625) internal successors, (75), 70 states have internal predecessors, (75), 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) [2021-11-25 20:07:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-11-25 20:07:28,741 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 15 [2021-11-25 20:07:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:28,742 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-11-25 20:07:28,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-11-25 20:07:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-11-25 20:07:28,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:07:28,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:28,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:28,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:07:28,743 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:28,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:28,743 INFO L85 PathProgramCache]: Analyzing trace with hash -883335857, now seen corresponding path program 1 times [2021-11-25 20:07:28,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:28,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785765247] [2021-11-25 20:07:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:28,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:28,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:28,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785765247] [2021-11-25 20:07:28,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785765247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:28,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:28,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:07:28,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417028934] [2021-11-25 20:07:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:28,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:07:28,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:07:28,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:07:28,825 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 20:07:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:28,916 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-11-25 20:07:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:07:28,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-11-25 20:07:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:28,917 INFO L225 Difference]: With dead ends: 71 [2021-11-25 20:07:28,918 INFO L226 Difference]: Without dead ends: 71 [2021-11-25 20:07:28,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:07:28,919 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 79 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:28,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 108 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-25 20:07:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-25 20:07:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 70 states have internal predecessors, (74), 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) [2021-11-25 20:07:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-11-25 20:07:28,927 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 15 [2021-11-25 20:07:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:28,927 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-11-25 20:07:28,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 20:07:28,927 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-11-25 20:07:28,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 20:07:28,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:28,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:28,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:07:28,929 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:28,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:28,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1703869309, now seen corresponding path program 1 times [2021-11-25 20:07:28,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:28,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278963226] [2021-11-25 20:07:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:28,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:29,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:29,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278963226] [2021-11-25 20:07:29,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278963226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:29,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:29,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 20:07:29,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102015607] [2021-11-25 20:07:29,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:29,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:07:29,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:07:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:07:29,227 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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) [2021-11-25 20:07:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:29,663 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2021-11-25 20:07:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:07:29,664 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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 16 [2021-11-25 20:07:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:29,665 INFO L225 Difference]: With dead ends: 136 [2021-11-25 20:07:29,665 INFO L226 Difference]: Without dead ends: 136 [2021-11-25 20:07:29,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:07:29,666 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 350 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:29,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 191 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:07:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-25 20:07:29,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 81. [2021-11-25 20:07:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 80 states have internal predecessors, (85), 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) [2021-11-25 20:07:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-11-25 20:07:29,669 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 16 [2021-11-25 20:07:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:29,669 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-11-25 20:07:29,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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) [2021-11-25 20:07:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-11-25 20:07:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 20:07:29,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:29,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:29,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:07:29,672 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 123776185, now seen corresponding path program 1 times [2021-11-25 20:07:29,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:29,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989033004] [2021-11-25 20:07:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:29,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:29,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:29,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989033004] [2021-11-25 20:07:29,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989033004] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:07:29,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878068602] [2021-11-25 20:07:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:29,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:07:29,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:07:29,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:07:29,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:07:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:29,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 20:07:29,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:07:30,080 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 [2021-11-25 20:07:30,134 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-11-25 20:07:30,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-11-25 20:07:30,232 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 20:07:30,233 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 33 treesize of output 24 [2021-11-25 20:07:30,316 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 20:07:30,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-11-25 20:07:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:30,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:07:30,437 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 38 treesize of output 34 [2021-11-25 20:07:30,738 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-11-25 20:07:30,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 72 [2021-11-25 20:07:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:30,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878068602] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:07:30,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1652691359] [2021-11-25 20:07:30,860 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 20:07:30,860 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:07:30,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:07:30,869 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:07:30,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:07:30,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:30,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:30,924 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 [2021-11-25 20:07:30,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:30,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:30,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:30,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:30,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:30,962 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 [2021-11-25 20:07:31,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,010 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-11-25 20:07:31,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,030 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-11-25 20:07:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,052 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 30 treesize of output 21 [2021-11-25 20:07:31,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 20:07:31,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,217 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 34 treesize of output 21 [2021-11-25 20:07:31,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,232 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 39 treesize of output 33 [2021-11-25 20:07:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-11-25 20:07:31,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 65 [2021-11-25 20:07:31,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 20:07:31,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 20:07:31,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 63 [2021-11-25 20:07:31,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,572 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 30 treesize of output 21 [2021-11-25 20:07:31,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,604 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 20:07:31,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 268 treesize of output 160 [2021-11-25 20:07:31,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 45 treesize of output 46 [2021-11-25 20:07:31,694 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:31,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,738 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 34 treesize of output 21 [2021-11-25 20:07:31,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,751 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 39 treesize of output 33 [2021-11-25 20:07:31,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-11-25 20:07:31,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 65 [2021-11-25 20:07:31,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 20:07:31,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:31,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 20:07:32,223 INFO L354 Elim1Store]: treesize reduction 190, result has 32.4 percent of original size [2021-11-25 20:07:32,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 344 treesize of output 407 [2021-11-25 20:07:32,969 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-25 20:07:32,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 495 treesize of output 359 [2021-11-25 20:07:33,009 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 20:07:33,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 495 treesize of output 478 [2021-11-25 20:07:33,070 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-25 20:07:33,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 495 treesize of output 492 [2021-11-25 20:07:33,245 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:07:36,608 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2184#(and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) |ULTIMATE.start_append_#t~mem6#1.base|) (<= 0 |ULTIMATE.start_append_#in~plist#1.base|) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_append_~item~0#1.base|) 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) |ULTIMATE.start_append_#t~mem5#1.base|) (or (not (= |ULTIMATE.start_append_#t~mem5#1.base| 0)) (not (= |ULTIMATE.start_append_#t~mem5#1.offset| 0))) (not (= (select |#valid| |ULTIMATE.start_append_#t~mem6#1.base|) 1)) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (<= 0 |ULTIMATE.start_append_~plist#1.base|) (= |ULTIMATE.start_append_#t~mem5#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|)) (= |ULTIMATE.start_append_~item~0#1.offset| 0) (<= |ULTIMATE.start_append_#in~plist#1.offset| 0) (= |ULTIMATE.start_append_#t~mem6#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|)) (<= 0 |ULTIMATE.start_append_~plist#1.offset|) (= |#NULL.offset| 0) (<= (+ |ULTIMATE.start_append_~item~0#1.offset| 4) (select |#length| |ULTIMATE.start_append_~item~0#1.base|)) (<= 0 |ULTIMATE.start_append_#in~plist#1.offset|) (<= |ULTIMATE.start_append_~plist#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:07:36,608 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:07:36,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:07:36,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2021-11-25 20:07:36,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787866745] [2021-11-25 20:07:36,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:07:36,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 20:07:36,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 20:07:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2021-11-25 20:07:36,612 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) [2021-11-25 20:07:37,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:37,122 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2021-11-25 20:07:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 20:07:37,123 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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 16 [2021-11-25 20:07:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:37,124 INFO L225 Difference]: With dead ends: 191 [2021-11-25 20:07:37,124 INFO L226 Difference]: Without dead ends: 191 [2021-11-25 20:07:37,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 20:07:37,125 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 307 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:37,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 444 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 458 Invalid, 0 Unknown, 161 Unchecked, 0.3s Time] [2021-11-25 20:07:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-25 20:07:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 88. [2021-11-25 20:07:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 87 states have internal predecessors, (94), 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) [2021-11-25 20:07:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2021-11-25 20:07:37,129 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 16 [2021-11-25 20:07:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:37,129 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2021-11-25 20:07:37,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) [2021-11-25 20:07:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2021-11-25 20:07:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 20:07:37,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:37,130 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:37,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:07:37,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:07:37,330 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-25 20:07:37,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash 123776186, now seen corresponding path program 1 times [2021-11-25 20:07:37,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:37,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338143738] [2021-11-25 20:07:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:37,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:37,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:37,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338143738] [2021-11-25 20:07:37,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338143738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:07:37,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742961285] [2021-11-25 20:07:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:37,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:07:37,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:07:37,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:07:37,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b82be88-6032-4a40-b8f8-12b552a032d3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:07:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:37,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-25 20:07:37,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:07:37,728 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 [2021-11-25 20:07:37,733 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 [2021-11-25 20:07:37,812 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-25 20:07:37,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 20:07:37,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 20:07:37,933 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 20:07:37,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-11-25 20:07:37,946 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 20:07:37,947 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 33 treesize of output 24 [2021-11-25 20:07:38,041 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 20:07:38,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-11-25 20:07:38,049 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 20:07:38,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2021-11-25 20:07:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:38,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:07:38,281 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 84 treesize of output 80 [2021-11-25 20:07:38,285 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 135 treesize of output 123 [2021-11-25 20:07:38,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:07:38,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 23 [2021-11-25 20:07:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:38,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742961285] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:07:38,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [910760881] [2021-11-25 20:07:38,551 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 20:07:38,551 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:07:38,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:07:38,552 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:07:38,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:07:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,571 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 [2021-11-25 20:07:38,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,599 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 [2021-11-25 20:07:38,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,642 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 30 treesize of output 21 [2021-11-25 20:07:38,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,654 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-11-25 20:07:38,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,668 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-11-25 20:07:38,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 20:07:38,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,778 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 28 treesize of output 30 [2021-11-25 20:07:38,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 20:07:38,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,808 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 34 treesize of output 21 [2021-11-25 20:07:38,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 65 [2021-11-25 20:07:38,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-25 20:07:38,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 20:07:38,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:38,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 78 [2021-11-25 20:07:39,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,052 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-25 20:07:39,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 345 treesize of output 191 [2021-11-25 20:07:39,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,088 INFO L354 Elim1Store]: treesize reduction 80, result has 22.3 percent of original size [2021-11-25 20:07:39,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 301 treesize of output 260 [2021-11-25 20:07:39,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,114 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 30 treesize of output 21 [2021-11-25 20:07:39,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:39,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,216 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 34 treesize of output 21 [2021-11-25 20:07:39,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,229 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 28 treesize of output 30 [2021-11-25 20:07:39,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 20:07:39,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-25 20:07:39,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 20:07:39,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:39,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 65 [2021-11-25 20:07:39,615 INFO L354 Elim1Store]: treesize reduction 190, result has 32.4 percent of original size [2021-11-25 20:07:39,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 341 treesize of output 404 [2021-11-25 20:12:48,740 WARN L227 SmtUtils]: Spent 51.57s on a formula simplification. DAG size of input: 882 DAG size of output: 701 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 20:12:48,744 INFO L354 Elim1Store]: treesize reduction 984, result has 71.0 percent of original size [2021-11-25 20:12:48,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 1 disjoint index pairs (out of 210 index pairs), introduced 20 new quantified variables, introduced 230 case distinctions, treesize of input 9600 treesize of output 10678 [2021-11-25 20:13:19,512 WARN L227 SmtUtils]: Spent 30.28s on a formula simplification. DAG size of input: 490 DAG size of output: 359 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 20:13:19,514 INFO L354 Elim1Store]: treesize reduction 508, result has 68.1 percent of original size [2021-11-25 20:13:19,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 1 disjoint index pairs (out of 105 index pairs), introduced 16 new quantified variables, introduced 119 case distinctions, treesize of input 10693 treesize of output 11215 [2021-11-25 20:13:20,136 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 20:13:20,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11230 treesize of output 10749