./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57f7a1998dcd55fec053068d0046a0ca66d4d8a7aa0cff34b96de19d20fe9283 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:41:39,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:41:39,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:41:39,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:41:39,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:41:39,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:41:39,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:41:39,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:41:39,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:41:39,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:41:39,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:41:39,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:41:39,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:41:39,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:41:39,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:41:39,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:41:39,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:41:39,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:41:39,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:41:39,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:41:39,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:41:39,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:41:39,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:41:39,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:41:39,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:41:39,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:41:39,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:41:39,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:41:39,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:41:39,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:41:39,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:41:39,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:41:39,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:41:39,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:41:39,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:41:39,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:41:39,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:41:39,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:41:39,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:41:39,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:41:39,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:41:39,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:41:39,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:41:39,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:41:39,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:41:39,431 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:41:39,431 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:41:39,432 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:41:39,432 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:41:39,432 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:41:39,432 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:41:39,433 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:41:39,433 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:41:39,433 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:41:39,433 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:41:39,434 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:41:39,434 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:41:39,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:41:39,435 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:41:39,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:41:39,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:41:39,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:41:39,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:41:39,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:41:39,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:41:39,437 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:41:39,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:41:39,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:41:39,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:41:39,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:41:39,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:41:39,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:41:39,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:41:39,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:41:39,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:41:39,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:41:39,440 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:41:39,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:41:39,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:41:39,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:41:39,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:41:39,441 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_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57f7a1998dcd55fec053068d0046a0ca66d4d8a7aa0cff34b96de19d20fe9283 [2021-11-03 03:41:39,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:41:39,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:41:39,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:41:39,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:41:39,796 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:41:39,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c [2021-11-03 03:41:39,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/data/1051a30a1/c50b0e9555e04516a87f6830971fa8cd/FLAG1012e8b78 [2021-11-03 03:41:40,711 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:41:40,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/sv-benchmarks/c/eca-rers2012/Problem03_label14.c [2021-11-03 03:41:40,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/data/1051a30a1/c50b0e9555e04516a87f6830971fa8cd/FLAG1012e8b78 [2021-11-03 03:41:40,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/data/1051a30a1/c50b0e9555e04516a87f6830971fa8cd [2021-11-03 03:41:40,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:41:40,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:41:40,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:40,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:41:40,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:41:40,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:40" (1/1) ... [2021-11-03 03:41:40,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c644443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:40, skipping insertion in model container [2021-11-03 03:41:40,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:40" (1/1) ... [2021-11-03 03:41:40,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:41:40,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:41:41,751 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/sv-benchmarks/c/eca-rers2012/Problem03_label14.c[57171,57184] [2021-11-03 03:41:41,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:41,795 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:41:42,116 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/sv-benchmarks/c/eca-rers2012/Problem03_label14.c[57171,57184] [2021-11-03 03:41:42,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:42,152 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:41:42,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42 WrapperNode [2021-11-03 03:41:42,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:42,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:41:42,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:41:42,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:41:42,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:41:42,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:41:42,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:41:42,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:41:42,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:41:42,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:41:42,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:41:42,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:41:42,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (1/1) ... [2021-11-03 03:41:42,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:41:42,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:42,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:41:42,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:41:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:41:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:41:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:41:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:41:45,897 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:41:45,897 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 03:41:45,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:45 BoogieIcfgContainer [2021-11-03 03:41:45,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:41:45,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:41:45,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:41:45,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:41:45,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:41:40" (1/3) ... [2021-11-03 03:41:45,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd209e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:45, skipping insertion in model container [2021-11-03 03:41:45,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42" (2/3) ... [2021-11-03 03:41:45,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd209e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:45, skipping insertion in model container [2021-11-03 03:41:45,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:45" (3/3) ... [2021-11-03 03:41:45,912 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label14.c [2021-11-03 03:41:45,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:41:45,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:41:45,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:41:45,985 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:41:45,986 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:41:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 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) [2021-11-03 03:41:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-03 03:41:46,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:46,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:46,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash 209343671, now seen corresponding path program 1 times [2021-11-03 03:41:46,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:46,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841377595] [2021-11-03 03:41:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:46,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:46,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:46,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841377595] [2021-11-03 03:41:46,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841377595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:46,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:46,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:41:46,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169148210] [2021-11-03 03:41:46,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:46,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:41:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:46,976 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 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 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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) [2021-11-03 03:41:48,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:48,109 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2021-11-03 03:41:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:48,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 143 [2021-11-03 03:41:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:48,132 INFO L225 Difference]: With dead ends: 440 [2021-11-03 03:41:48,137 INFO L226 Difference]: Without dead ends: 289 [2021-11-03 03:41:48,143 INFO L786 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 [2021-11-03 03:41:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-03 03:41:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-11-03 03:41:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.8055555555555556) internal successors, (520), 288 states have internal predecessors, (520), 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) [2021-11-03 03:41:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 520 transitions. [2021-11-03 03:41:48,217 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 520 transitions. Word has length 143 [2021-11-03 03:41:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:48,218 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 520 transitions. [2021-11-03 03:41:48,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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) [2021-11-03 03:41:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 520 transitions. [2021-11-03 03:41:48,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-03 03:41:48,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:48,224 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:48,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:41:48,225 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1322619553, now seen corresponding path program 1 times [2021-11-03 03:41:48,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:48,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724939860] [2021-11-03 03:41:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:48,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:48,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:48,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724939860] [2021-11-03 03:41:48,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724939860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:48,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:48,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:41:48,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482554460] [2021-11-03 03:41:48,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:48,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:41:48,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:48,395 INFO L87 Difference]: Start difference. First operand 289 states and 520 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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) [2021-11-03 03:41:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:49,315 INFO L93 Difference]: Finished difference Result 865 states and 1558 transitions. [2021-11-03 03:41:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:49,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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 148 [2021-11-03 03:41:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:49,322 INFO L225 Difference]: With dead ends: 865 [2021-11-03 03:41:49,322 INFO L226 Difference]: Without dead ends: 577 [2021-11-03 03:41:49,325 INFO L786 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 [2021-11-03 03:41:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-03 03:41:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2021-11-03 03:41:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.6742160278745644) internal successors, (961), 574 states have internal predecessors, (961), 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) [2021-11-03 03:41:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 961 transitions. [2021-11-03 03:41:49,377 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 961 transitions. Word has length 148 [2021-11-03 03:41:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:49,378 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 961 transitions. [2021-11-03 03:41:49,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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) [2021-11-03 03:41:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 961 transitions. [2021-11-03 03:41:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-03 03:41:49,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:49,398 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:49,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:41:49,398 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:49,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1094383958, now seen corresponding path program 1 times [2021-11-03 03:41:49,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:49,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488885934] [2021-11-03 03:41:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:49,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:49,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:49,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488885934] [2021-11-03 03:41:49,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488885934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:49,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:49,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:41:49,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199873112] [2021-11-03 03:41:49,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:49,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:41:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:49,534 INFO L87 Difference]: Start difference. First operand 575 states and 961 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2021-11-03 03:41:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:50,410 INFO L93 Difference]: Finished difference Result 1721 states and 2880 transitions. [2021-11-03 03:41:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:50,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 151 [2021-11-03 03:41:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:50,420 INFO L225 Difference]: With dead ends: 1721 [2021-11-03 03:41:50,421 INFO L226 Difference]: Without dead ends: 1147 [2021-11-03 03:41:50,423 INFO L786 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 [2021-11-03 03:41:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-11-03 03:41:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2021-11-03 03:41:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.6265270506108203) internal successors, (1864), 1146 states have internal predecessors, (1864), 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) [2021-11-03 03:41:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1864 transitions. [2021-11-03 03:41:50,474 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1864 transitions. Word has length 151 [2021-11-03 03:41:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:50,474 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1864 transitions. [2021-11-03 03:41:50,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2021-11-03 03:41:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1864 transitions. [2021-11-03 03:41:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-03 03:41:50,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:50,480 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:50,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:41:50,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:50,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1051103491, now seen corresponding path program 1 times [2021-11-03 03:41:50,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:50,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401358668] [2021-11-03 03:41:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:50,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:41:50,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:50,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401358668] [2021-11-03 03:41:50,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401358668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:50,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:50,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:41:50,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742055609] [2021-11-03 03:41:50,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:50,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:41:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:50,628 INFO L87 Difference]: Start difference. First operand 1147 states and 1864 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-03 03:41:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:51,606 INFO L93 Difference]: Finished difference Result 3437 states and 5589 transitions. [2021-11-03 03:41:51,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:51,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 163 [2021-11-03 03:41:51,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:51,624 INFO L225 Difference]: With dead ends: 3437 [2021-11-03 03:41:51,625 INFO L226 Difference]: Without dead ends: 2291 [2021-11-03 03:41:51,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-11-03 03:41:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2021-11-03 03:41:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2290 states have (on average 1.4026200873362444) internal successors, (3212), 2290 states have internal predecessors, (3212), 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) [2021-11-03 03:41:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3212 transitions. [2021-11-03 03:41:51,719 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3212 transitions. Word has length 163 [2021-11-03 03:41:51,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:51,720 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 3212 transitions. [2021-11-03 03:41:51,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-03 03:41:51,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3212 transitions. [2021-11-03 03:41:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 03:41:51,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:51,729 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:51,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:41:51,730 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:51,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:51,732 INFO L85 PathProgramCache]: Analyzing trace with hash -520475287, now seen corresponding path program 1 times [2021-11-03 03:41:51,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:51,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419825285] [2021-11-03 03:41:51,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:51,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:41:51,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:51,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419825285] [2021-11-03 03:41:51,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419825285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:51,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:51,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:41:51,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687790383] [2021-11-03 03:41:51,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:51,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:41:51,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:51,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:51,885 INFO L87 Difference]: Start difference. First operand 2291 states and 3212 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2021-11-03 03:41:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:52,926 INFO L93 Difference]: Finished difference Result 5725 states and 7996 transitions. [2021-11-03 03:41:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 171 [2021-11-03 03:41:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:52,951 INFO L225 Difference]: With dead ends: 5725 [2021-11-03 03:41:52,951 INFO L226 Difference]: Without dead ends: 3435 [2021-11-03 03:41:52,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:52,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2021-11-03 03:41:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2021-11-03 03:41:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 3434 states have (on average 1.340128130460105) internal successors, (4602), 3434 states have internal predecessors, (4602), 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) [2021-11-03 03:41:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4602 transitions. [2021-11-03 03:41:53,072 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4602 transitions. Word has length 171 [2021-11-03 03:41:53,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:53,073 INFO L470 AbstractCegarLoop]: Abstraction has 3435 states and 4602 transitions. [2021-11-03 03:41:53,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2021-11-03 03:41:53,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4602 transitions. [2021-11-03 03:41:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-03 03:41:53,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:53,086 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:53,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 03:41:53,087 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:53,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 441259069, now seen corresponding path program 1 times [2021-11-03 03:41:53,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:53,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647296352] [2021-11-03 03:41:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:53,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-03 03:41:53,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:53,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647296352] [2021-11-03 03:41:53,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647296352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:53,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:53,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:41:53,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858609276] [2021-11-03 03:41:53,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:53,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:41:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:53,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:53,216 INFO L87 Difference]: Start difference. First operand 3435 states and 4602 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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) [2021-11-03 03:41:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:53,770 INFO L93 Difference]: Finished difference Result 6869 states and 9203 transitions. [2021-11-03 03:41:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 176 [2021-11-03 03:41:53,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:53,797 INFO L225 Difference]: With dead ends: 6869 [2021-11-03 03:41:53,797 INFO L226 Difference]: Without dead ends: 3435 [2021-11-03 03:41:53,802 INFO L786 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 [2021-11-03 03:41:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2021-11-03 03:41:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2021-11-03 03:41:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 3434 states have (on average 1.3098427489807805) internal successors, (4498), 3434 states have internal predecessors, (4498), 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) [2021-11-03 03:41:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4498 transitions. [2021-11-03 03:41:53,919 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4498 transitions. Word has length 176 [2021-11-03 03:41:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:53,919 INFO L470 AbstractCegarLoop]: Abstraction has 3435 states and 4498 transitions. [2021-11-03 03:41:53,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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) [2021-11-03 03:41:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4498 transitions. [2021-11-03 03:41:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-03 03:41:53,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:53,931 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:53,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 03:41:53,932 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:53,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1441034555, now seen corresponding path program 1 times [2021-11-03 03:41:53,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:53,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827869346] [2021-11-03 03:41:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:53,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:54,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:54,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827869346] [2021-11-03 03:41:54,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827869346] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:41:54,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832605916] [2021-11-03 03:41:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:54,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:54,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:54,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:41:54,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:41:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:54,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:54,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:41:55,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:41:55,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832605916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:55,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 03:41:55,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-03 03:41:55,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642114534] [2021-11-03 03:41:55,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:55,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:41:55,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:55,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:41:55,883 INFO L87 Difference]: Start difference. First operand 3435 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2021-11-03 03:41:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:56,763 INFO L93 Difference]: Finished difference Result 8728 states and 11507 transitions. [2021-11-03 03:41:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:56,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 181 [2021-11-03 03:41:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:56,806 INFO L225 Difference]: With dead ends: 8728 [2021-11-03 03:41:56,806 INFO L226 Difference]: Without dead ends: 5294 [2021-11-03 03:41:56,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:41:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-11-03 03:41:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5294. [2021-11-03 03:41:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 1.303608539580578) internal successors, (6900), 5293 states have internal predecessors, (6900), 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) [2021-11-03 03:41:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 6900 transitions. [2021-11-03 03:41:57,059 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 6900 transitions. Word has length 181 [2021-11-03 03:41:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:57,060 INFO L470 AbstractCegarLoop]: Abstraction has 5294 states and 6900 transitions. [2021-11-03 03:41:57,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2021-11-03 03:41:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 6900 transitions. [2021-11-03 03:41:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-03 03:41:57,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:57,074 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:57,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 03:41:57,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:57,289 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:57,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2067557920, now seen corresponding path program 1 times [2021-11-03 03:41:57,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:57,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129682081] [2021-11-03 03:41:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:57,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:57,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:57,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129682081] [2021-11-03 03:41:57,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129682081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:57,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:57,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:41:57,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019251809] [2021-11-03 03:41:57,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:57,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:41:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:57,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:57,402 INFO L87 Difference]: Start difference. First operand 5294 states and 6900 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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) [2021-11-03 03:41:58,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:58,360 INFO L93 Difference]: Finished difference Result 12446 states and 16213 transitions. [2021-11-03 03:41:58,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:58,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 184 [2021-11-03 03:41:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:58,404 INFO L225 Difference]: With dead ends: 12446 [2021-11-03 03:41:58,404 INFO L226 Difference]: Without dead ends: 7153 [2021-11-03 03:41:58,412 INFO L786 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 [2021-11-03 03:41:58,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2021-11-03 03:41:58,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 7153. [2021-11-03 03:41:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7153 states, 7152 states have (on average 1.2918064876957494) internal successors, (9239), 7152 states have internal predecessors, (9239), 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) [2021-11-03 03:41:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 9239 transitions. [2021-11-03 03:41:58,735 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 9239 transitions. Word has length 184 [2021-11-03 03:41:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:58,735 INFO L470 AbstractCegarLoop]: Abstraction has 7153 states and 9239 transitions. [2021-11-03 03:41:58,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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) [2021-11-03 03:41:58,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 9239 transitions. [2021-11-03 03:41:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-03 03:41:58,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:58,760 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:58,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 03:41:58,765 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:41:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1304633093, now seen corresponding path program 1 times [2021-11-03 03:41:58,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:41:58,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378745671] [2021-11-03 03:41:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:58,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:41:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:58,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:41:58,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378745671] [2021-11-03 03:41:58,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378745671] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:41:58,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830136359] [2021-11-03 03:41:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:58,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:58,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:58,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:41:58,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 03:41:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:41:59,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:42:00,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:42:00,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830136359] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:00,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 03:42:00,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-11-03 03:42:00,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777345253] [2021-11-03 03:42:00,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:42:00,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:00,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:42:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:00,762 INFO L87 Difference]: Start difference. First operand 7153 states and 9239 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2021-11-03 03:42:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:01,681 INFO L93 Difference]: Finished difference Result 15735 states and 20724 transitions. [2021-11-03 03:42:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:01,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 191 [2021-11-03 03:42:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:01,740 INFO L225 Difference]: With dead ends: 15735 [2021-11-03 03:42:01,740 INFO L226 Difference]: Without dead ends: 8869 [2021-11-03 03:42:01,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2021-11-03 03:42:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8869. [2021-11-03 03:42:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 8868 states have (on average 1.3346865133062698) internal successors, (11836), 8868 states have internal predecessors, (11836), 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) [2021-11-03 03:42:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 11836 transitions. [2021-11-03 03:42:02,005 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 11836 transitions. Word has length 191 [2021-11-03 03:42:02,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:02,008 INFO L470 AbstractCegarLoop]: Abstraction has 8869 states and 11836 transitions. [2021-11-03 03:42:02,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2021-11-03 03:42:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 11836 transitions. [2021-11-03 03:42:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-03 03:42:02,037 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:02,038 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:02,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:02,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:42:02,261 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:42:02,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:02,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1816296061, now seen corresponding path program 1 times [2021-11-03 03:42:02,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:02,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053121734] [2021-11-03 03:42:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:02,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 94 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 03:42:02,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:02,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053121734] [2021-11-03 03:42:02,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053121734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:42:02,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157904097] [2021-11-03 03:42:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:02,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:42:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:02,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:42:02,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 03:42:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:02,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:42:02,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:42:03,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:42:04,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157904097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:04,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 03:42:04,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-11-03 03:42:04,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364841690] [2021-11-03 03:42:04,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:42:04,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:42:04,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:04,387 INFO L87 Difference]: Start difference. First operand 8869 states and 11836 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-11-03 03:42:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:05,258 INFO L93 Difference]: Finished difference Result 20311 states and 27549 transitions. [2021-11-03 03:42:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:05,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 252 [2021-11-03 03:42:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:05,287 INFO L225 Difference]: With dead ends: 20311 [2021-11-03 03:42:05,287 INFO L226 Difference]: Without dead ends: 11586 [2021-11-03 03:42:05,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 501 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2021-11-03 03:42:05,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11586. [2021-11-03 03:42:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11586 states, 11585 states have (on average 1.2844195079844627) internal successors, (14880), 11585 states have internal predecessors, (14880), 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) [2021-11-03 03:42:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11586 states to 11586 states and 14880 transitions. [2021-11-03 03:42:05,561 INFO L78 Accepts]: Start accepts. Automaton has 11586 states and 14880 transitions. Word has length 252 [2021-11-03 03:42:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:05,562 INFO L470 AbstractCegarLoop]: Abstraction has 11586 states and 14880 transitions. [2021-11-03 03:42:05,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-11-03 03:42:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 11586 states and 14880 transitions. [2021-11-03 03:42:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-03 03:42:05,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:05,585 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:05,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:05,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-03 03:42:05,813 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:42:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:05,813 INFO L85 PathProgramCache]: Analyzing trace with hash -945840320, now seen corresponding path program 1 times [2021-11-03 03:42:05,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:05,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076656128] [2021-11-03 03:42:05,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:05,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:06,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:06,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076656128] [2021-11-03 03:42:06,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076656128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:06,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:06,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:42:06,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112971230] [2021-11-03 03:42:06,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:42:06,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:06,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:42:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:06,111 INFO L87 Difference]: Start difference. First operand 11586 states and 14880 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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) [2021-11-03 03:42:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:07,091 INFO L93 Difference]: Finished difference Result 26460 states and 34008 transitions. [2021-11-03 03:42:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:07,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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 267 [2021-11-03 03:42:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:07,127 INFO L225 Difference]: With dead ends: 26460 [2021-11-03 03:42:07,127 INFO L226 Difference]: Without dead ends: 15018 [2021-11-03 03:42:07,143 INFO L786 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 [2021-11-03 03:42:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15018 states. [2021-11-03 03:42:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15018 to 14303. [2021-11-03 03:42:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14303 states, 14302 states have (on average 1.2742273807859041) internal successors, (18224), 14302 states have internal predecessors, (18224), 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) [2021-11-03 03:42:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14303 states to 14303 states and 18224 transitions. [2021-11-03 03:42:07,537 INFO L78 Accepts]: Start accepts. Automaton has 14303 states and 18224 transitions. Word has length 267 [2021-11-03 03:42:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:07,538 INFO L470 AbstractCegarLoop]: Abstraction has 14303 states and 18224 transitions. [2021-11-03 03:42:07,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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) [2021-11-03 03:42:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 14303 states and 18224 transitions. [2021-11-03 03:42:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-03 03:42:07,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:07,564 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:07,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 03:42:07,565 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:42:07,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2073355333, now seen corresponding path program 1 times [2021-11-03 03:42:07,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:07,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994638111] [2021-11-03 03:42:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:07,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:07,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:07,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994638111] [2021-11-03 03:42:07,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994638111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:42:07,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144269757] [2021-11-03 03:42:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:07,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:42:07,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:07,805 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:42:07,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 03:42:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:08,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:42:08,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:42:11,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:42:12,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144269757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:12,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 03:42:12,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2021-11-03 03:42:12,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619821510] [2021-11-03 03:42:12,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:42:12,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:12,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:42:12,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:12,743 INFO L87 Difference]: Start difference. First operand 14303 states and 18224 transitions. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2021-11-03 03:42:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:14,434 INFO L93 Difference]: Finished difference Result 33608 states and 42832 transitions. [2021-11-03 03:42:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:42:14,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 274 [2021-11-03 03:42:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:14,436 INFO L225 Difference]: With dead ends: 33608 [2021-11-03 03:42:14,436 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 03:42:14,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 03:42:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 03:42:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-03 03:42:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 03:42:14,466 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2021-11-03 03:42:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:14,466 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 03:42:14,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2021-11-03 03:42:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 03:42:14,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 03:42:14,470 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:42:14,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:14,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:42:14,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 03:42:14,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:42:14,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:42:14,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:42:15,144 INFO L857 garLoopResultBuilder]: For program point L1555(line 1555) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,145 INFO L857 garLoopResultBuilder]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,146 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,147 INFO L857 garLoopResultBuilder]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,148 INFO L857 garLoopResultBuilder]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 03:42:15,149 INFO L857 garLoopResultBuilder]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,150 INFO L857 garLoopResultBuilder]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1555) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,151 INFO L857 garLoopResultBuilder]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,152 INFO L857 garLoopResultBuilder]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,153 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,153 INFO L857 garLoopResultBuilder]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,153 INFO L857 garLoopResultBuilder]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,153 INFO L853 garLoopResultBuilder]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse1 (= ~a27~0 1)) (.cse0 (= ~a5~0 1))) (or (and .cse0 (= ~a6~0 0) .cse1) (and .cse0 (<= 1 ~a3~0)) (and .cse0 .cse1 (= ~a3~0 0)) (and (= ~a26~0 0) .cse0 (= ~a12~0 1)) (and .cse0 (<= ~a11~0 0) .cse1) (and (= ~a26~0 1) .cse0))) [2021-11-03 03:42:15,153 INFO L857 garLoopResultBuilder]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,153 INFO L857 garLoopResultBuilder]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,153 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,153 INFO L857 garLoopResultBuilder]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L860 garLoopResultBuilder]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,154 INFO L857 garLoopResultBuilder]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,155 INFO L857 garLoopResultBuilder]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,155 INFO L857 garLoopResultBuilder]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,155 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,155 INFO L857 garLoopResultBuilder]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,155 INFO L857 garLoopResultBuilder]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,155 INFO L853 garLoopResultBuilder]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse1 (= ~a27~0 1)) (.cse0 (= ~a5~0 1))) (or (and .cse0 (= ~a6~0 0) .cse1) (and .cse0 (<= 1 ~a3~0)) (and .cse0 .cse1 (= ~a3~0 0)) (and (= ~a26~0 0) .cse0 (= ~a12~0 1)) (and .cse0 (<= ~a11~0 0) .cse1) (and (= ~a26~0 1) .cse0))) [2021-11-03 03:42:15,155 INFO L857 garLoopResultBuilder]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,155 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,155 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,156 INFO L857 garLoopResultBuilder]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,156 INFO L857 garLoopResultBuilder]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,156 INFO L857 garLoopResultBuilder]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,156 INFO L857 garLoopResultBuilder]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,156 INFO L857 garLoopResultBuilder]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,158 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 03:42:15,159 INFO L857 garLoopResultBuilder]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,159 INFO L857 garLoopResultBuilder]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,159 INFO L857 garLoopResultBuilder]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,159 INFO L857 garLoopResultBuilder]: For program point L1673(line 1673) no Hoare annotation was computed. [2021-11-03 03:42:15,159 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,159 INFO L857 garLoopResultBuilder]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,160 INFO L857 garLoopResultBuilder]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,160 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,160 INFO L857 garLoopResultBuilder]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,160 INFO L857 garLoopResultBuilder]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,160 INFO L857 garLoopResultBuilder]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,160 INFO L857 garLoopResultBuilder]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,161 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,161 INFO L857 garLoopResultBuilder]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,161 INFO L857 garLoopResultBuilder]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,161 INFO L857 garLoopResultBuilder]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,161 INFO L857 garLoopResultBuilder]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,161 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,162 INFO L857 garLoopResultBuilder]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,162 INFO L857 garLoopResultBuilder]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,162 INFO L857 garLoopResultBuilder]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,162 INFO L857 garLoopResultBuilder]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,162 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,162 INFO L857 garLoopResultBuilder]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,162 INFO L857 garLoopResultBuilder]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,163 INFO L857 garLoopResultBuilder]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,163 INFO L857 garLoopResultBuilder]: For program point L1551-1(lines 64 1660) no Hoare annotation was computed. [2021-11-03 03:42:15,163 INFO L857 garLoopResultBuilder]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,163 INFO L857 garLoopResultBuilder]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,163 INFO L857 garLoopResultBuilder]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,163 INFO L857 garLoopResultBuilder]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,164 INFO L857 garLoopResultBuilder]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,164 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2021-11-03 03:42:15,164 INFO L857 garLoopResultBuilder]: For program point L1554-1(lines 64 1660) no Hoare annotation was computed. [2021-11-03 03:42:15,167 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:15,169 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:42:15,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:42:15 BoogieIcfgContainer [2021-11-03 03:42:15,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:42:15,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:42:15,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:42:15,196 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:42:15,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:45" (3/4) ... [2021-11-03 03:42:15,200 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 03:42:15,235 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 123 nodes and edges [2021-11-03 03:42:15,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-03 03:42:15,244 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-03 03:42:15,248 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 03:42:15,546 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 03:42:15,546 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:42:15,548 INFO L168 Benchmark]: Toolchain (without parser) took 34734.25 ms. Allocated memory was 88.1 MB in the beginning and 568.3 MB in the end (delta: 480.2 MB). Free memory was 52.6 MB in the beginning and 194.9 MB in the end (delta: -142.3 MB). Peak memory consumption was 338.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,548 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:42:15,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1337.53 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.4 MB in the beginning and 55.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 170.97 ms. Allocated memory is still 107.0 MB. Free memory was 55.6 MB in the beginning and 40.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,550 INFO L168 Benchmark]: Boogie Preprocessor took 168.62 ms. Allocated memory is still 107.0 MB. Free memory was 40.9 MB in the beginning and 60.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,551 INFO L168 Benchmark]: RCFGBuilder took 3405.15 ms. Allocated memory was 107.0 MB in the beginning and 151.0 MB in the end (delta: 44.0 MB). Free memory was 60.6 MB in the beginning and 72.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,551 INFO L168 Benchmark]: TraceAbstraction took 29290.73 ms. Allocated memory was 151.0 MB in the beginning and 568.3 MB in the end (delta: 417.3 MB). Free memory was 72.0 MB in the beginning and 232.7 MB in the end (delta: -160.6 MB). Peak memory consumption was 257.8 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,552 INFO L168 Benchmark]: Witness Printer took 350.56 ms. Allocated memory is still 568.3 MB. Free memory was 232.7 MB in the beginning and 194.9 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1337.53 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.4 MB in the beginning and 55.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 170.97 ms. Allocated memory is still 107.0 MB. Free memory was 55.6 MB in the beginning and 40.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 168.62 ms. Allocated memory is still 107.0 MB. Free memory was 40.9 MB in the beginning and 60.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3405.15 ms. Allocated memory was 107.0 MB in the beginning and 151.0 MB in the end (delta: 44.0 MB). Free memory was 60.6 MB in the beginning and 72.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29290.73 ms. Allocated memory was 151.0 MB in the beginning and 568.3 MB in the end (delta: 417.3 MB). Free memory was 72.0 MB in the beginning and 232.7 MB in the end (delta: -160.6 MB). Peak memory consumption was 257.8 MB. Max. memory is 16.1 GB. * Witness Printer took 350.56 ms. Allocated memory is still 568.3 MB. Free memory was 232.7 MB in the beginning and 194.9 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1555]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.1s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1430 SDtfs, 1205 SDslu, 58 SDs, 0 SdLazy, 5708 SolverSat, 1367 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1819 GetRequests, 1795 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14303occurred in iteration=11, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 717 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 227 NumberOfFragments, 111 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4990 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 242 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 3199 NumberOfCodeBlocks, 3199 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4077 ConstructedInterpolants, 0 QuantifiedInterpolants, 12935 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1870 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 1462/1486 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((((a5 == 1 && a6 == 0) && a27 == 1) || (a5 == 1 && 1 <= a3)) || ((a5 == 1 && a27 == 1) && a3 == 0)) || ((a26 == 0 && a5 == 1) && a12 == 1)) || ((a5 == 1 && a11 <= 0) && a27 == 1)) || (a26 == 1 && a5 == 1) - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((a5 == 1 && a6 == 0) && a27 == 1) || (a5 == 1 && 1 <= a3)) || ((a5 == 1 && a27 == 1) && a3 == 0)) || ((a26 == 0 && a5 == 1) && a12 == 1)) || ((a5 == 1 && a11 <= 0) && a27 == 1)) || (a26 == 1 && a5 == 1) RESULT: Ultimate proved your program to be correct! [2021-11-03 03:42:15,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d4aff32-2f32-434d-8984-b334b745a616/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE