./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:27:17,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:27:17,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:27:17,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:27:17,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:27:17,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:27:17,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:27:17,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:27:17,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:27:17,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:27:17,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:27:17,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:27:17,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:27:17,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:27:17,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:27:17,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:27:17,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:27:17,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:27:17,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:27:17,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:27:17,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:27:17,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:27:17,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:27:17,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:27:17,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:27:17,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:27:17,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:27:17,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:27:17,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:27:17,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:27:17,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:27:17,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:27:17,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:27:17,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:27:17,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:27:17,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:27:17,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:27:17,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:27:17,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:27:17,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:27:17,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:27:17,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 13:27:17,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:27:17,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:27:17,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:27:17,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:27:17,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:27:17,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:27:17,320 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:27:17,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:27:17,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:27:17,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:27:17,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:27:17,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:27:17,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:27:17,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:27:17,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:27:17,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:27:17,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:27:17,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:27:17,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:27:17,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:27:17,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:27:17,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:27:17,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:27:17,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:27:17,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:27:17,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:27:17,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:27:17,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:27:17,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:27:17,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f [2021-11-23 13:27:17,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:27:17,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:27:17,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:27:17,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:27:17,767 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:27:17,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-11-23 13:27:17,848 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/data/67491ccda/7195631b1af140e6b68eff0274fc4d86/FLAGa23a2c176 [2021-11-23 13:27:19,118 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:27:19,119 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-11-23 13:27:19,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/data/67491ccda/7195631b1af140e6b68eff0274fc4d86/FLAGa23a2c176 [2021-11-23 13:27:19,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/data/67491ccda/7195631b1af140e6b68eff0274fc4d86 [2021-11-23 13:27:19,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:27:19,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:27:19,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:27:19,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:27:19,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:27:19,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:27:19" (1/1) ... [2021-11-23 13:27:19,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c119cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:19, skipping insertion in model container [2021-11-23 13:27:19,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:27:19" (1/1) ... [2021-11-23 13:27:19,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:27:19,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:27:20,541 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-11-23 13:27:20,542 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2021-11-23 13:27:21,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2021-11-23 13:27:22,475 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-23 13:27:22,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:27:22,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:27:22,742 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-11-23 13:27:22,743 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2021-11-23 13:27:22,764 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2021-11-23 13:27:23,205 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-23 13:27:23,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:27:23,344 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:27:23,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23 WrapperNode [2021-11-23 13:27:23,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:27:23,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:27:23,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:27:23,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:27:23,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:23,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:24,254 INFO L137 Inliner]: procedures = 259, calls = 2016, calls flagged for inlining = 707, calls inlined = 1960, statements flattened = 19943 [2021-11-23 13:27:24,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:27:24,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:27:24,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:27:24,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:27:24,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:24,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:24,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:24,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:25,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:25,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:25,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:25,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:27:25,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:27:25,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:27:25,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:27:25,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (1/1) ... [2021-11-23 13:27:25,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:27:25,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:27:25,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:27:25,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:27:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-23 13:27:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:27:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:27:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:27:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:27:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure he_ioctl [2021-11-23 13:27:25,625 INFO L138 BoogieDeclarations]: Found implementation of procedure he_ioctl [2021-11-23 13:27:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:27:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:27:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:27:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:27:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 13:27:25,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 13:27:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:27:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 13:27:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:27:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:27:25,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:27:26,635 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:27:26,638 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:27:36,856 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:27:36,918 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:27:36,918 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:27:36,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:27:36 BoogieIcfgContainer [2021-11-23 13:27:36,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:27:36,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:27:36,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:27:36,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:27:36,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:27:19" (1/3) ... [2021-11-23 13:27:36,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daf5959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:27:36, skipping insertion in model container [2021-11-23 13:27:36,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:23" (2/3) ... [2021-11-23 13:27:36,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daf5959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:27:36, skipping insertion in model container [2021-11-23 13:27:36,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:27:36" (3/3) ... [2021-11-23 13:27:36,942 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-11-23 13:27:36,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:27:36,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-23 13:27:37,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:27:37,048 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:27:37,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-23 13:27:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 3516 states, 3497 states have (on average 1.2805261652845297) internal successors, (4478), 3509 states have internal predecessors, (4478), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 13:27:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 13:27:37,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:37,157 INFO L514 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] [2021-11-23 13:27:37,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash 922957803, now seen corresponding path program 1 times [2021-11-23 13:27:37,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:37,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85499774] [2021-11-23 13:27:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:37,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:27:37,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:37,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85499774] [2021-11-23 13:27:37,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85499774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:37,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:37,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:27:37,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342559422] [2021-11-23 13:27:37,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:37,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:27:37,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:37,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:27:37,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:27:37,975 INFO L87 Difference]: Start difference. First operand has 3516 states, 3497 states have (on average 1.2805261652845297) internal successors, (4478), 3509 states have internal predecessors, (4478), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:38,811 INFO L93 Difference]: Finished difference Result 9498 states and 12068 transitions. [2021-11-23 13:27:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:27:38,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-23 13:27:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:38,891 INFO L225 Difference]: With dead ends: 9498 [2021-11-23 13:27:38,891 INFO L226 Difference]: Without dead ends: 5923 [2021-11-23 13:27:38,913 INFO L932 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 [2021-11-23 13:27:38,922 INFO L933 BasicCegarLoop]: 4436 mSDtfsCounter, 3123 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 8797 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:38,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3123 Valid, 8797 Invalid, 42 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:27:38,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5923 states. [2021-11-23 13:27:39,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5923 to 5453. [2021-11-23 13:27:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5435 states have (on average 1.2575896964121436) internal successors, (6835), 5446 states have internal predecessors, (6835), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 13:27:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 6843 transitions. [2021-11-23 13:27:39,382 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 6843 transitions. Word has length 30 [2021-11-23 13:27:39,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:39,383 INFO L470 AbstractCegarLoop]: Abstraction has 5453 states and 6843 transitions. [2021-11-23 13:27:39,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 6843 transitions. [2021-11-23 13:27:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 13:27:39,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:39,394 INFO L514 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] [2021-11-23 13:27:39,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:27:39,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1244819681, now seen corresponding path program 1 times [2021-11-23 13:27:39,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:39,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165689536] [2021-11-23 13:27:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:39,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:27:39,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:39,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165689536] [2021-11-23 13:27:39,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165689536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:39,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:39,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:27:39,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40602640] [2021-11-23 13:27:39,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:39,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:27:39,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:27:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:27:39,649 INFO L87 Difference]: Start difference. First operand 5453 states and 6843 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:40,216 INFO L93 Difference]: Finished difference Result 12113 states and 15283 transitions. [2021-11-23 13:27:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:27:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-23 13:27:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:40,270 INFO L225 Difference]: With dead ends: 12113 [2021-11-23 13:27:40,271 INFO L226 Difference]: Without dead ends: 6688 [2021-11-23 13:27:40,290 INFO L932 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 [2021-11-23 13:27:40,292 INFO L933 BasicCegarLoop]: 5652 mSDtfsCounter, 1479 mSDsluCounter, 4331 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 9983 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:40,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 9983 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:27:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6688 states. [2021-11-23 13:27:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6688 to 6680. [2021-11-23 13:27:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6680 states, 6656 states have (on average 1.2696814903846154) internal successors, (8451), 6667 states have internal predecessors, (8451), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 13:27:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6680 states to 6680 states and 8467 transitions. [2021-11-23 13:27:40,624 INFO L78 Accepts]: Start accepts. Automaton has 6680 states and 8467 transitions. Word has length 32 [2021-11-23 13:27:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:40,625 INFO L470 AbstractCegarLoop]: Abstraction has 6680 states and 8467 transitions. [2021-11-23 13:27:40,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 6680 states and 8467 transitions. [2021-11-23 13:27:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 13:27:40,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:40,629 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:27:40,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:27:40,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash -149355783, now seen corresponding path program 1 times [2021-11-23 13:27:40,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:40,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193418557] [2021-11-23 13:27:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:40,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:27:40,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:40,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193418557] [2021-11-23 13:27:40,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193418557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:40,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:40,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:27:40,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404689364] [2021-11-23 13:27:40,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:40,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:27:40,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:27:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:27:40,805 INFO L87 Difference]: Start difference. First operand 6680 states and 8467 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:41,219 INFO L93 Difference]: Finished difference Result 14579 states and 18551 transitions. [2021-11-23 13:27:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:27:41,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-23 13:27:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:41,280 INFO L225 Difference]: With dead ends: 14579 [2021-11-23 13:27:41,280 INFO L226 Difference]: Without dead ends: 7927 [2021-11-23 13:27:41,298 INFO L932 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 [2021-11-23 13:27:41,306 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 3755 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 7879 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:41,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 7879 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:27:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7927 states. [2021-11-23 13:27:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7927 to 7919. [2021-11-23 13:27:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7919 states, 7889 states have (on average 1.278108759031563) internal successors, (10083), 7900 states have internal predecessors, (10083), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:27:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7919 states to 7919 states and 10107 transitions. [2021-11-23 13:27:41,806 INFO L78 Accepts]: Start accepts. Automaton has 7919 states and 10107 transitions. Word has length 46 [2021-11-23 13:27:41,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:41,807 INFO L470 AbstractCegarLoop]: Abstraction has 7919 states and 10107 transitions. [2021-11-23 13:27:41,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7919 states and 10107 transitions. [2021-11-23 13:27:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 13:27:41,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:41,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:27:41,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:27:41,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:41,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1379337885, now seen corresponding path program 1 times [2021-11-23 13:27:41,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:41,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079635812] [2021-11-23 13:27:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:41,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:27:42,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:42,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079635812] [2021-11-23 13:27:42,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079635812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:42,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:42,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:27:42,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623601558] [2021-11-23 13:27:42,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:42,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:27:42,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:42,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:27:42,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:27:42,076 INFO L87 Difference]: Start difference. First operand 7919 states and 10107 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:42,484 INFO L93 Difference]: Finished difference Result 7919 states and 10107 transitions. [2021-11-23 13:27:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:27:42,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 51 [2021-11-23 13:27:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:42,566 INFO L225 Difference]: With dead ends: 7919 [2021-11-23 13:27:42,566 INFO L226 Difference]: Without dead ends: 7901 [2021-11-23 13:27:42,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:27:42,575 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 2745 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 5825 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:42,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2745 Valid, 5825 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:27:42,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2021-11-23 13:27:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 7901. [2021-11-23 13:27:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7901 states, 7880 states have (on average 1.2761421319796955) internal successors, (10056), 7882 states have internal predecessors, (10056), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:27:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 10080 transitions. [2021-11-23 13:27:43,077 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 10080 transitions. Word has length 51 [2021-11-23 13:27:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:43,080 INFO L470 AbstractCegarLoop]: Abstraction has 7901 states and 10080 transitions. [2021-11-23 13:27:43,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 10080 transitions. [2021-11-23 13:27:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 13:27:43,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:43,087 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:27:43,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:27:43,088 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash -197669502, now seen corresponding path program 1 times [2021-11-23 13:27:43,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:43,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090388476] [2021-11-23 13:27:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:43,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:27:43,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:43,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090388476] [2021-11-23 13:27:43,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090388476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:43,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:43,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:27:43,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18288842] [2021-11-23 13:27:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:43,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:27:43,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:27:43,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:27:43,297 INFO L87 Difference]: Start difference. First operand 7901 states and 10080 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:43,622 INFO L93 Difference]: Finished difference Result 15780 states and 20139 transitions. [2021-11-23 13:27:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:27:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 76 [2021-11-23 13:27:43,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:43,656 INFO L225 Difference]: With dead ends: 15780 [2021-11-23 13:27:43,656 INFO L226 Difference]: Without dead ends: 7907 [2021-11-23 13:27:43,676 INFO L932 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 [2021-11-23 13:27:43,679 INFO L933 BasicCegarLoop]: 4353 mSDtfsCounter, 0 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8696 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:43,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8696 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:27:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7907 states. [2021-11-23 13:27:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7907 to 7907. [2021-11-23 13:27:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7907 states, 7886 states have (on average 1.275932031448136) internal successors, (10062), 7888 states have internal predecessors, (10062), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:27:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7907 states to 7907 states and 10086 transitions. [2021-11-23 13:27:44,017 INFO L78 Accepts]: Start accepts. Automaton has 7907 states and 10086 transitions. Word has length 76 [2021-11-23 13:27:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:44,021 INFO L470 AbstractCegarLoop]: Abstraction has 7907 states and 10086 transitions. [2021-11-23 13:27:44,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 7907 states and 10086 transitions. [2021-11-23 13:27:44,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 13:27:44,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:44,031 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:27:44,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:27:44,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:44,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash -510447192, now seen corresponding path program 1 times [2021-11-23 13:27:44,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:44,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322941452] [2021-11-23 13:27:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:44,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:27:44,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:44,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322941452] [2021-11-23 13:27:44,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322941452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:44,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:44,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:27:44,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831549514] [2021-11-23 13:27:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:44,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:27:44,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:44,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:27:44,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:27:44,285 INFO L87 Difference]: Start difference. First operand 7907 states and 10086 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:45,215 INFO L93 Difference]: Finished difference Result 20762 states and 26382 transitions. [2021-11-23 13:27:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:27:45,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-23 13:27:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:45,262 INFO L225 Difference]: With dead ends: 20762 [2021-11-23 13:27:45,263 INFO L226 Difference]: Without dead ends: 12883 [2021-11-23 13:27:45,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:27:45,282 INFO L933 BasicCegarLoop]: 6842 mSDtfsCounter, 6489 mSDsluCounter, 17631 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6489 SdHoareTripleChecker+Valid, 24473 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:45,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6489 Valid, 24473 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:27:45,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12883 states. [2021-11-23 13:27:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12883 to 7921. [2021-11-23 13:27:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7900 states have (on average 1.2756962025316456) internal successors, (10078), 7902 states have internal predecessors, (10078), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:27:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 10102 transitions. [2021-11-23 13:27:45,808 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 10102 transitions. Word has length 78 [2021-11-23 13:27:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:45,809 INFO L470 AbstractCegarLoop]: Abstraction has 7921 states and 10102 transitions. [2021-11-23 13:27:45,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 10102 transitions. [2021-11-23 13:27:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 13:27:45,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:45,816 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:27:45,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:27:45,817 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:45,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash -87745366, now seen corresponding path program 1 times [2021-11-23 13:27:45,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:45,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109257501] [2021-11-23 13:27:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:45,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:27:46,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:46,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109257501] [2021-11-23 13:27:46,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109257501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:46,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:46,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:27:46,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775806478] [2021-11-23 13:27:46,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:46,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:27:46,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:46,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:27:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:27:46,103 INFO L87 Difference]: Start difference. First operand 7921 states and 10102 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:48,700 INFO L93 Difference]: Finished difference Result 38382 states and 48931 transitions. [2021-11-23 13:27:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:27:48,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-23 13:27:48,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:48,824 INFO L225 Difference]: With dead ends: 38382 [2021-11-23 13:27:48,824 INFO L226 Difference]: Without dead ends: 30489 [2021-11-23 13:27:48,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:27:48,866 INFO L933 BasicCegarLoop]: 6933 mSDtfsCounter, 23095 mSDsluCounter, 17459 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23097 SdHoareTripleChecker+Valid, 24392 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:48,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23097 Valid, 24392 Invalid, 182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:27:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30489 states. [2021-11-23 13:27:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30489 to 7927. [2021-11-23 13:27:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7927 states, 7906 states have (on average 1.2754869719200608) internal successors, (10084), 7908 states have internal predecessors, (10084), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:27:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 10108 transitions. [2021-11-23 13:27:49,819 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 10108 transitions. Word has length 78 [2021-11-23 13:27:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:49,821 INFO L470 AbstractCegarLoop]: Abstraction has 7927 states and 10108 transitions. [2021-11-23 13:27:49,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 10108 transitions. [2021-11-23 13:27:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 13:27:49,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:49,828 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:27:49,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:27:49,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:49,830 INFO L85 PathProgramCache]: Analyzing trace with hash 436714982, now seen corresponding path program 1 times [2021-11-23 13:27:49,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:49,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104500219] [2021-11-23 13:27:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:49,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:27:50,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:50,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104500219] [2021-11-23 13:27:50,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104500219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:50,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:50,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 13:27:50,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602819112] [2021-11-23 13:27:50,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:50,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:27:50,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:27:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:27:50,383 INFO L87 Difference]: Start difference. First operand 7927 states and 10108 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:56,039 INFO L93 Difference]: Finished difference Result 45158 states and 58055 transitions. [2021-11-23 13:27:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 13:27:56,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 13:27:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:56,175 INFO L225 Difference]: With dead ends: 45158 [2021-11-23 13:27:56,175 INFO L226 Difference]: Without dead ends: 37259 [2021-11-23 13:27:56,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2021-11-23 13:27:56,203 INFO L933 BasicCegarLoop]: 14721 mSDtfsCounter, 46747 mSDsluCounter, 43546 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46747 SdHoareTripleChecker+Valid, 58267 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:56,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46747 Valid, 58267 Invalid, 610 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [141 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:27:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37259 states. [2021-11-23 13:27:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37259 to 9750. [2021-11-23 13:27:57,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9750 states, 9729 states have (on average 1.267345050878816) internal successors, (12330), 9731 states have internal predecessors, (12330), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:27:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9750 states to 9750 states and 12354 transitions. [2021-11-23 13:27:58,028 INFO L78 Accepts]: Start accepts. Automaton has 9750 states and 12354 transitions. Word has length 80 [2021-11-23 13:27:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:58,029 INFO L470 AbstractCegarLoop]: Abstraction has 9750 states and 12354 transitions. [2021-11-23 13:27:58,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9750 states and 12354 transitions. [2021-11-23 13:27:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 13:27:58,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:58,038 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:27:58,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:27:58,039 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:27:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash 794370889, now seen corresponding path program 1 times [2021-11-23 13:27:58,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:58,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892907175] [2021-11-23 13:27:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:58,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:27:58,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:58,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892907175] [2021-11-23 13:27:58,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892907175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:58,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:58,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:27:58,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962179455] [2021-11-23 13:27:58,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:58,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:27:58,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:58,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:27:58,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:27:58,212 INFO L87 Difference]: Start difference. First operand 9750 states and 12354 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:00,456 INFO L93 Difference]: Finished difference Result 26096 states and 33273 transitions. [2021-11-23 13:28:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:28:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 92 [2021-11-23 13:28:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:00,510 INFO L225 Difference]: With dead ends: 26096 [2021-11-23 13:28:00,511 INFO L226 Difference]: Without dead ends: 16374 [2021-11-23 13:28:00,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:28:00,534 INFO L933 BasicCegarLoop]: 6349 mSDtfsCounter, 5857 mSDsluCounter, 10682 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5859 SdHoareTripleChecker+Valid, 17031 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:00,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5859 Valid, 17031 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:28:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16374 states. [2021-11-23 13:28:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16374 to 9756. [2021-11-23 13:28:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9756 states, 9735 states have (on average 1.267180277349769) internal successors, (12336), 9737 states have internal predecessors, (12336), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9756 states to 9756 states and 12360 transitions. [2021-11-23 13:28:01,665 INFO L78 Accepts]: Start accepts. Automaton has 9756 states and 12360 transitions. Word has length 92 [2021-11-23 13:28:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:01,665 INFO L470 AbstractCegarLoop]: Abstraction has 9756 states and 12360 transitions. [2021-11-23 13:28:01,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9756 states and 12360 transitions. [2021-11-23 13:28:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-23 13:28:01,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:01,676 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:01,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:28:01,677 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:01,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:01,678 INFO L85 PathProgramCache]: Analyzing trace with hash 323781303, now seen corresponding path program 1 times [2021-11-23 13:28:01,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:01,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035932146] [2021-11-23 13:28:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:01,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:28:01,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:01,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035932146] [2021-11-23 13:28:01,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035932146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:28:01,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:28:01,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:28:01,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129049854] [2021-11-23 13:28:01,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:28:01,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:28:01,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:28:01,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:28:01,932 INFO L87 Difference]: Start difference. First operand 9756 states and 12360 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:04,245 INFO L93 Difference]: Finished difference Result 19694 states and 24936 transitions. [2021-11-23 13:28:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:28:04,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 169 [2021-11-23 13:28:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:04,277 INFO L225 Difference]: With dead ends: 19694 [2021-11-23 13:28:04,277 INFO L226 Difference]: Without dead ends: 9966 [2021-11-23 13:28:04,298 INFO L932 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 [2021-11-23 13:28:04,299 INFO L933 BasicCegarLoop]: 4341 mSDtfsCounter, 73 mSDsluCounter, 4331 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 8672 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:04,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 8672 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:28:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2021-11-23 13:28:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 9771. [2021-11-23 13:28:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9771 states, 9750 states have (on average 1.2667692307692309) internal successors, (12351), 9752 states have internal predecessors, (12351), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9771 states to 9771 states and 12375 transitions. [2021-11-23 13:28:05,319 INFO L78 Accepts]: Start accepts. Automaton has 9771 states and 12375 transitions. Word has length 169 [2021-11-23 13:28:05,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:05,320 INFO L470 AbstractCegarLoop]: Abstraction has 9771 states and 12375 transitions. [2021-11-23 13:28:05,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9771 states and 12375 transitions. [2021-11-23 13:28:05,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-23 13:28:05,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:05,344 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:05,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:28:05,345 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:05,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:05,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1192273931, now seen corresponding path program 1 times [2021-11-23 13:28:05,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:05,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520161810] [2021-11-23 13:28:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:05,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:28:05,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:05,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520161810] [2021-11-23 13:28:05,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520161810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:28:05,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:28:05,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:28:05,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475991097] [2021-11-23 13:28:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:28:05,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:28:05,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:28:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:28:05,558 INFO L87 Difference]: Start difference. First operand 9771 states and 12375 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:07,028 INFO L93 Difference]: Finished difference Result 19631 states and 24852 transitions. [2021-11-23 13:28:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:28:07,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 [2021-11-23 13:28:07,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:07,058 INFO L225 Difference]: With dead ends: 19631 [2021-11-23 13:28:07,058 INFO L226 Difference]: Without dead ends: 9888 [2021-11-23 13:28:07,078 INFO L932 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 [2021-11-23 13:28:07,079 INFO L933 BasicCegarLoop]: 4343 mSDtfsCounter, 33 mSDsluCounter, 4316 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8659 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:07,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8659 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:28:07,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9888 states. [2021-11-23 13:28:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9888 to 9789. [2021-11-23 13:28:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9768 states have (on average 1.2662776412776413) internal successors, (12369), 9770 states have internal predecessors, (12369), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 12393 transitions. [2021-11-23 13:28:07,991 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 12393 transitions. Word has length 191 [2021-11-23 13:28:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:07,992 INFO L470 AbstractCegarLoop]: Abstraction has 9789 states and 12393 transitions. [2021-11-23 13:28:07,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 12393 transitions. [2021-11-23 13:28:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-23 13:28:08,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:08,007 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:08,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:28:08,008 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:08,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1426591225, now seen corresponding path program 1 times [2021-11-23 13:28:08,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:08,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986697570] [2021-11-23 13:28:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:08,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:28:08,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:08,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986697570] [2021-11-23 13:28:08,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986697570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:28:08,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461395810] [2021-11-23 13:28:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:08,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:08,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:28:08,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:28:08,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:28:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:09,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 3121 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:28:09,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:28:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:28:09,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:28:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:28:10,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461395810] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:28:10,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:28:10,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:28:10,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61246806] [2021-11-23 13:28:10,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:28:10,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:28:10,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:28:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:28:10,416 INFO L87 Difference]: Start difference. First operand 9789 states and 12393 transitions. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:11,877 INFO L93 Difference]: Finished difference Result 19937 states and 25203 transitions. [2021-11-23 13:28:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:28:11,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 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 230 [2021-11-23 13:28:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:11,909 INFO L225 Difference]: With dead ends: 19937 [2021-11-23 13:28:11,909 INFO L226 Difference]: Without dead ends: 10176 [2021-11-23 13:28:11,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:28:11,933 INFO L933 BasicCegarLoop]: 4334 mSDtfsCounter, 244 mSDsluCounter, 8692 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 13026 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:11,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 13026 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:28:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10176 states. [2021-11-23 13:28:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10176 to 10140. [2021-11-23 13:28:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10140 states, 10119 states have (on average 1.2570412096056922) internal successors, (12720), 10121 states have internal predecessors, (12720), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 12744 transitions. [2021-11-23 13:28:12,997 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 12744 transitions. Word has length 230 [2021-11-23 13:28:12,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:12,997 INFO L470 AbstractCegarLoop]: Abstraction has 10140 states and 12744 transitions. [2021-11-23 13:28:12,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 12744 transitions. [2021-11-23 13:28:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-23 13:28:13,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:13,016 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:13,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:28:13,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:13,231 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:13,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:13,231 INFO L85 PathProgramCache]: Analyzing trace with hash 928621995, now seen corresponding path program 2 times [2021-11-23 13:28:13,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:13,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015064991] [2021-11-23 13:28:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:13,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-11-23 13:28:13,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:13,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015064991] [2021-11-23 13:28:13,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015064991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:28:13,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493314916] [2021-11-23 13:28:13,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:28:13,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:13,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:28:13,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:28:13,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:28:14,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:28:14,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:28:14,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 4183 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:28:14,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:28:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-23 13:28:15,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:28:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-23 13:28:16,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493314916] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:28:16,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:28:16,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2021-11-23 13:28:16,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950339277] [2021-11-23 13:28:16,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:28:16,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:28:16,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:16,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:28:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:28:16,256 INFO L87 Difference]: Start difference. First operand 10140 states and 12744 transitions. Second operand has 12 states, 12 states have (on average 24.333333333333332) internal successors, (292), 12 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:19,219 INFO L93 Difference]: Finished difference Result 22829 states and 28410 transitions. [2021-11-23 13:28:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 13:28:19,219 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 24.333333333333332) internal successors, (292), 12 states have internal predecessors, (292), 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 347 [2021-11-23 13:28:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:19,253 INFO L225 Difference]: With dead ends: 22829 [2021-11-23 13:28:19,253 INFO L226 Difference]: Without dead ends: 12717 [2021-11-23 13:28:19,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-23 13:28:19,277 INFO L933 BasicCegarLoop]: 4338 mSDtfsCounter, 1850 mSDsluCounter, 17426 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 21764 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:19,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 21764 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 13:28:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12717 states. [2021-11-23 13:28:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12717 to 11376. [2021-11-23 13:28:20,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11376 states, 11355 states have (on average 1.2311756935270806) internal successors, (13980), 11357 states have internal predecessors, (13980), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11376 states to 11376 states and 14004 transitions. [2021-11-23 13:28:20,516 INFO L78 Accepts]: Start accepts. Automaton has 11376 states and 14004 transitions. Word has length 347 [2021-11-23 13:28:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:20,517 INFO L470 AbstractCegarLoop]: Abstraction has 11376 states and 14004 transitions. [2021-11-23 13:28:20,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.333333333333332) internal successors, (292), 12 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 11376 states and 14004 transitions. [2021-11-23 13:28:20,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2021-11-23 13:28:20,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:20,558 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:20,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:28:20,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 13:28:20,774 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 85756919, now seen corresponding path program 3 times [2021-11-23 13:28:20,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:20,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245951525] [2021-11-23 13:28:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:20,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2780 trivial. 0 not checked. [2021-11-23 13:28:22,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:22,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245951525] [2021-11-23 13:28:22,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245951525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:28:22,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571857086] [2021-11-23 13:28:22,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:28:22,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:28:22,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:28:22,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:28:23,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 13:28:23,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:28:23,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2476 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:28:23,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:28:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3657 trivial. 0 not checked. [2021-11-23 13:28:24,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:28:24,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571857086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:28:24,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:28:24,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-23 13:28:24,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937023180] [2021-11-23 13:28:24,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:28:24,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:28:24,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:24,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:28:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:28:24,612 INFO L87 Difference]: Start difference. First operand 11376 states and 14004 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:29,116 INFO L93 Difference]: Finished difference Result 29348 states and 36573 transitions. [2021-11-23 13:28:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:28:29,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 733 [2021-11-23 13:28:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:29,156 INFO L225 Difference]: With dead ends: 29348 [2021-11-23 13:28:29,156 INFO L226 Difference]: Without dead ends: 18000 [2021-11-23 13:28:29,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:28:29,178 INFO L933 BasicCegarLoop]: 6348 mSDtfsCounter, 5857 mSDsluCounter, 10681 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5859 SdHoareTripleChecker+Valid, 17029 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:29,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5859 Valid, 17029 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:28:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18000 states. [2021-11-23 13:28:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18000 to 11376. [2021-11-23 13:28:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11376 states, 11355 states have (on average 1.2311756935270806) internal successors, (13980), 11357 states have internal predecessors, (13980), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11376 states to 11376 states and 14004 transitions. [2021-11-23 13:28:30,902 INFO L78 Accepts]: Start accepts. Automaton has 11376 states and 14004 transitions. Word has length 733 [2021-11-23 13:28:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:30,904 INFO L470 AbstractCegarLoop]: Abstraction has 11376 states and 14004 transitions. [2021-11-23 13:28:30,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11376 states and 14004 transitions. [2021-11-23 13:28:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2021-11-23 13:28:30,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:30,939 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:30,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:28:31,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:31,154 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:31,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:31,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2061316402, now seen corresponding path program 1 times [2021-11-23 13:28:31,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:31,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425593518] [2021-11-23 13:28:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:31,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:31,480 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:28:31,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372267379] [2021-11-23 13:28:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:31,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:31,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:28:31,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:28:31,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:28:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:34,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 11887 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:28:34,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:28:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3690 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3683 trivial. 0 not checked. [2021-11-23 13:28:36,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:28:36,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425593518] [2021-11-23 13:28:36,180 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:28:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372267379] [2021-11-23 13:28:36,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372267379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:28:36,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:28:36,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:28:36,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699215843] [2021-11-23 13:28:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:28:36,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:28:36,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:36,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:28:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:28:36,185 INFO L87 Difference]: Start difference. First operand 11376 states and 14004 transitions. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:37,843 INFO L93 Difference]: Finished difference Result 22805 states and 28074 transitions. [2021-11-23 13:28:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:28:37,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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 1116 [2021-11-23 13:28:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:37,866 INFO L225 Difference]: With dead ends: 22805 [2021-11-23 13:28:37,867 INFO L226 Difference]: Without dead ends: 11457 [2021-11-23 13:28:37,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 1114 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:28:37,887 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 27 mSDsluCounter, 4340 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8686 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:37,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 8686 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:28:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11457 states. [2021-11-23 13:28:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11457 to 11385. [2021-11-23 13:28:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11385 states, 11364 states have (on average 1.2309926082365363) internal successors, (13989), 11366 states have internal predecessors, (13989), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11385 states to 11385 states and 14013 transitions. [2021-11-23 13:28:39,538 INFO L78 Accepts]: Start accepts. Automaton has 11385 states and 14013 transitions. Word has length 1116 [2021-11-23 13:28:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:39,540 INFO L470 AbstractCegarLoop]: Abstraction has 11385 states and 14013 transitions. [2021-11-23 13:28:39,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 11385 states and 14013 transitions. [2021-11-23 13:28:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2021-11-23 13:28:39,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:39,571 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:39,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 13:28:39,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 13:28:39,790 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1548143801, now seen corresponding path program 1 times [2021-11-23 13:28:39,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:39,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163397667] [2021-11-23 13:28:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:39,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:40,113 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:28:40,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507782362] [2021-11-23 13:28:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:40,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:40,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:28:40,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:28:40,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:28:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:42,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 12149 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:28:42,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:28:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3693 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3686 trivial. 0 not checked. [2021-11-23 13:28:44,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:28:44,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:44,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163397667] [2021-11-23 13:28:44,388 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:28:44,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507782362] [2021-11-23 13:28:44,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507782362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:28:44,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:28:44,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:28:44,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002596002] [2021-11-23 13:28:44,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:28:44,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:28:44,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:44,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:28:44,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:28:44,393 INFO L87 Difference]: Start difference. First operand 11385 states and 14013 transitions. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:46,344 INFO L93 Difference]: Finished difference Result 22796 states and 28050 transitions. [2021-11-23 13:28:46,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:28:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 1143 [2021-11-23 13:28:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:46,364 INFO L225 Difference]: With dead ends: 22796 [2021-11-23 13:28:46,364 INFO L226 Difference]: Without dead ends: 11439 [2021-11-23 13:28:46,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:28:46,384 INFO L933 BasicCegarLoop]: 4337 mSDtfsCounter, 17 mSDsluCounter, 4334 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 8671 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:46,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 8671 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:28:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11439 states. [2021-11-23 13:28:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11439 to 11388. [2021-11-23 13:28:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11367 states have (on average 1.230931644233307) internal successors, (13992), 11369 states have internal predecessors, (13992), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 14016 transitions. [2021-11-23 13:28:47,978 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 14016 transitions. Word has length 1143 [2021-11-23 13:28:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:47,980 INFO L470 AbstractCegarLoop]: Abstraction has 11388 states and 14016 transitions. [2021-11-23 13:28:47,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 14016 transitions. [2021-11-23 13:28:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2021-11-23 13:28:48,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:48,012 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:48,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:28:48,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-23 13:28:48,226 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:48,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:48,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2119607885, now seen corresponding path program 1 times [2021-11-23 13:28:48,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:48,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029833698] [2021-11-23 13:28:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:48,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:48,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:28:48,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450290920] [2021-11-23 13:28:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:48,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:48,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:28:48,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:28:48,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:28:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:51,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 12408 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:28:51,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:28:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-23 13:28:53,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:28:53,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:53,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029833698] [2021-11-23 13:28:53,582 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:28:53,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450290920] [2021-11-23 13:28:53,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450290920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:28:53,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:28:53,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:28:53,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719412214] [2021-11-23 13:28:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:28:53,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:28:53,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:28:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:28:53,589 INFO L87 Difference]: Start difference. First operand 11388 states and 14016 transitions. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 2 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:55,286 INFO L93 Difference]: Finished difference Result 22748 states and 27999 transitions. [2021-11-23 13:28:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:28:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 2 states have internal predecessors, (636), 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 1161 [2021-11-23 13:28:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:55,301 INFO L225 Difference]: With dead ends: 22748 [2021-11-23 13:28:55,301 INFO L226 Difference]: Without dead ends: 11388 [2021-11-23 13:28:55,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:28:55,311 INFO L933 BasicCegarLoop]: 4351 mSDtfsCounter, 4147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 4351 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:55,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 4351 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:28:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11388 states. [2021-11-23 13:28:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11388 to 11388. [2021-11-23 13:28:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11367 states have (on average 1.2304038004750595) internal successors, (13986), 11369 states have internal predecessors, (13986), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:28:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 14010 transitions. [2021-11-23 13:28:56,681 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 14010 transitions. Word has length 1161 [2021-11-23 13:28:56,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:56,682 INFO L470 AbstractCegarLoop]: Abstraction has 11388 states and 14010 transitions. [2021-11-23 13:28:56,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 2 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 14010 transitions. [2021-11-23 13:28:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2021-11-23 13:28:56,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:56,705 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:56,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:28:56,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 13:28:56,931 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:28:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1032841589, now seen corresponding path program 1 times [2021-11-23 13:28:56,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:56,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273624736] [2021-11-23 13:28:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:56,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:57,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:28:57,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534187828] [2021-11-23 13:28:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:57,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:57,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:28:57,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:28:57,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 13:28:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:59,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 12404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:28:59,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:29:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-23 13:29:01,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:29:01,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:29:01,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273624736] [2021-11-23 13:29:01,913 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:29:01,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534187828] [2021-11-23 13:29:01,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534187828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:29:01,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:29:01,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:29:01,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467821511] [2021-11-23 13:29:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:29:01,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:29:01,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:29:01,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:29:01,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:29:01,918 INFO L87 Difference]: Start difference. First operand 11388 states and 14010 transitions. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 2 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:29:03,750 INFO L93 Difference]: Finished difference Result 22748 states and 27987 transitions. [2021-11-23 13:29:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:29:03,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 2 states have internal predecessors, (636), 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 1161 [2021-11-23 13:29:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:29:03,772 INFO L225 Difference]: With dead ends: 22748 [2021-11-23 13:29:03,772 INFO L226 Difference]: Without dead ends: 11388 [2021-11-23 13:29:03,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:29:03,794 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4145 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:29:03,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4145 Valid, 4350 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:29:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11388 states. [2021-11-23 13:29:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11388 to 11388. [2021-11-23 13:29:05,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11367 states have (on average 1.2301398785959357) internal successors, (13983), 11369 states have internal predecessors, (13983), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:29:05,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 14007 transitions. [2021-11-23 13:29:05,328 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 14007 transitions. Word has length 1161 [2021-11-23 13:29:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:29:05,329 INFO L470 AbstractCegarLoop]: Abstraction has 11388 states and 14007 transitions. [2021-11-23 13:29:05,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 2 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:05,330 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 14007 transitions. [2021-11-23 13:29:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2021-11-23 13:29:05,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:29:05,352 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:29:05,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 13:29:05,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 13:29:05,553 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:29:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:29:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash -580344179, now seen corresponding path program 1 times [2021-11-23 13:29:05,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:29:05,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610411899] [2021-11-23 13:29:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:29:05,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:29:05,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:29:05,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712549002] [2021-11-23 13:29:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:29:05,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:29:05,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:29:05,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:29:05,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 13:29:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:29:08,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 12400 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:29:08,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:29:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2021-11-23 13:29:10,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:29:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2021-11-23 13:29:12,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:29:12,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610411899] [2021-11-23 13:29:12,485 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:29:12,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712549002] [2021-11-23 13:29:12,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712549002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:29:12,486 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:29:12,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-23 13:29:12,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845216262] [2021-11-23 13:29:12,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:29:12,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:29:12,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:29:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:29:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:29:12,491 INFO L87 Difference]: Start difference. First operand 11388 states and 14007 transitions. Second operand has 8 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:29:18,026 INFO L93 Difference]: Finished difference Result 36362 states and 45030 transitions. [2021-11-23 13:29:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:29:18,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 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 1161 [2021-11-23 13:29:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:29:18,094 INFO L225 Difference]: With dead ends: 36362 [2021-11-23 13:29:18,095 INFO L226 Difference]: Without dead ends: 25002 [2021-11-23 13:29:18,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2320 GetRequests, 2314 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:29:18,121 INFO L933 BasicCegarLoop]: 5712 mSDtfsCounter, 8829 mSDsluCounter, 16617 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8833 SdHoareTripleChecker+Valid, 22329 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:29:18,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8833 Valid, 22329 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 13:29:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25002 states. [2021-11-23 13:29:20,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25002 to 13380. [2021-11-23 13:29:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13380 states, 13359 states have (on average 1.2009880979115204) internal successors, (16044), 13361 states have internal predecessors, (16044), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:29:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13380 states to 13380 states and 16068 transitions. [2021-11-23 13:29:20,293 INFO L78 Accepts]: Start accepts. Automaton has 13380 states and 16068 transitions. Word has length 1161 [2021-11-23 13:29:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:29:20,294 INFO L470 AbstractCegarLoop]: Abstraction has 13380 states and 16068 transitions. [2021-11-23 13:29:20,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 13380 states and 16068 transitions. [2021-11-23 13:29:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1811 [2021-11-23 13:29:20,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:29:20,336 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:29:20,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:29:20,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:29:20,542 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:29:20,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:29:20,543 INFO L85 PathProgramCache]: Analyzing trace with hash 849293209, now seen corresponding path program 2 times [2021-11-23 13:29:20,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:29:20,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342532310] [2021-11-23 13:29:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:29:20,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:29:20,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:29:20,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732947647] [2021-11-23 13:29:20,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:29:20,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:29:20,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:29:20,998 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:29:21,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 13:29:24,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:29:24,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:29:24,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 18339 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:29:24,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:29:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19864 backedges. 7 proven. 13131 refuted. 0 times theorem prover too weak. 6726 trivial. 0 not checked. [2021-11-23 13:29:27,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:29:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 19864 backedges. 7 proven. 13131 refuted. 0 times theorem prover too weak. 6726 trivial. 0 not checked. [2021-11-23 13:29:31,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:29:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342532310] [2021-11-23 13:29:31,490 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:29:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732947647] [2021-11-23 13:29:31,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732947647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:29:31,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:29:31,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-23 13:29:31,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463334531] [2021-11-23 13:29:31,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:29:31,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 13:29:31,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:29:31,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:29:31,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:29:31,496 INFO L87 Difference]: Start difference. First operand 13380 states and 16068 transitions. Second operand has 16 states, 16 states have (on average 56.375) internal successors, (902), 16 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:29:39,598 INFO L93 Difference]: Finished difference Result 47409 states and 57810 transitions. [2021-11-23 13:29:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 13:29:39,599 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 56.375) internal successors, (902), 16 states have internal predecessors, (902), 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 1810 [2021-11-23 13:29:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:29:39,656 INFO L225 Difference]: With dead ends: 47409 [2021-11-23 13:29:39,656 INFO L226 Difference]: Without dead ends: 34057 [2021-11-23 13:29:39,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3618 GetRequests, 3604 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:29:39,679 INFO L933 BasicCegarLoop]: 6894 mSDtfsCounter, 15356 mSDsluCounter, 17850 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15362 SdHoareTripleChecker+Valid, 24744 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:29:39,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15362 Valid, 24744 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 13:29:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34057 states. [2021-11-23 13:29:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34057 to 17730. [2021-11-23 13:29:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17730 states, 17709 states have (on average 1.159918685414196) internal successors, (20541), 17711 states have internal predecessors, (20541), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:29:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17730 states to 17730 states and 20565 transitions. [2021-11-23 13:29:42,668 INFO L78 Accepts]: Start accepts. Automaton has 17730 states and 20565 transitions. Word has length 1810 [2021-11-23 13:29:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:29:42,669 INFO L470 AbstractCegarLoop]: Abstraction has 17730 states and 20565 transitions. [2021-11-23 13:29:42,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.375) internal successors, (902), 16 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 17730 states and 20565 transitions. [2021-11-23 13:29:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3228 [2021-11-23 13:29:42,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:29:42,756 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:29:42,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-23 13:29:42,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-11-23 13:29:42,957 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:29:42,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:29:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1733269983, now seen corresponding path program 3 times [2021-11-23 13:29:42,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:29:42,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015398830] [2021-11-23 13:29:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:29:42,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:29:43,648 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:29:43,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596130532] [2021-11-23 13:29:43,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:29:43,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:29:43,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:29:43,654 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:29:43,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 13:29:46,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 13:29:46,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:29:46,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 6300 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:29:46,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:29:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 102479 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102472 trivial. 0 not checked. [2021-11-23 13:29:50,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:29:50,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:29:50,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015398830] [2021-11-23 13:29:50,452 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:29:50,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596130532] [2021-11-23 13:29:50,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596130532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:29:50,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:29:50,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:29:50,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625759307] [2021-11-23 13:29:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:29:50,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:29:50,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:29:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:29:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:29:50,458 INFO L87 Difference]: Start difference. First operand 17730 states and 20565 transitions. Second operand has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:29:57,629 INFO L93 Difference]: Finished difference Result 56323 states and 65811 transitions. [2021-11-23 13:29:57,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:29:57,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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 3227 [2021-11-23 13:29:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:29:57,704 INFO L225 Difference]: With dead ends: 56323 [2021-11-23 13:29:57,704 INFO L226 Difference]: Without dead ends: 38621 [2021-11-23 13:29:57,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3228 GetRequests, 3225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:29:57,729 INFO L933 BasicCegarLoop]: 7739 mSDtfsCounter, 8480 mSDsluCounter, 12083 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8482 SdHoareTripleChecker+Valid, 19822 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:29:57,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8482 Valid, 19822 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:29:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38621 states. [2021-11-23 13:30:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38621 to 17736. [2021-11-23 13:30:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17736 states, 17715 states have (on average 1.1598645215918713) internal successors, (20547), 17717 states have internal predecessors, (20547), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:30:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17736 states to 17736 states and 20571 transitions. [2021-11-23 13:30:00,948 INFO L78 Accepts]: Start accepts. Automaton has 17736 states and 20571 transitions. Word has length 3227 [2021-11-23 13:30:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:30:00,950 INFO L470 AbstractCegarLoop]: Abstraction has 17736 states and 20571 transitions. [2021-11-23 13:30:00,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 17736 states and 20571 transitions. [2021-11-23 13:30:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3234 [2021-11-23 13:30:01,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:30:01,031 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:30:01,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:30:01,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:01,233 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:30:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:30:01,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2013219564, now seen corresponding path program 1 times [2021-11-23 13:30:01,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:30:01,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831183571] [2021-11-23 13:30:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:01,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:30:01,911 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:30:01,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838667104] [2021-11-23 13:30:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:01,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:01,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:01,914 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:30:01,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 13:30:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:30:08,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 31307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:30:08,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:30:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 102479 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102472 trivial. 0 not checked. [2021-11-23 13:30:11,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:30:11,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:30:11,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831183571] [2021-11-23 13:30:11,852 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:30:11,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838667104] [2021-11-23 13:30:11,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838667104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:30:11,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:30:11,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:30:11,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48957540] [2021-11-23 13:30:11,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:30:11,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:30:11,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:30:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:30:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:30:11,858 INFO L87 Difference]: Start difference. First operand 17736 states and 20571 transitions. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:30:15,071 INFO L93 Difference]: Finished difference Result 35471 states and 41142 transitions. [2021-11-23 13:30:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:30:15,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 3233 [2021-11-23 13:30:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:30:15,102 INFO L225 Difference]: With dead ends: 35471 [2021-11-23 13:30:15,102 INFO L226 Difference]: Without dead ends: 17763 [2021-11-23 13:30:15,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3232 GetRequests, 3231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:30:15,124 INFO L933 BasicCegarLoop]: 4349 mSDtfsCounter, 9 mSDsluCounter, 4340 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8689 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:30:15,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8689 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:30:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17763 states. [2021-11-23 13:30:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17763 to 17739. [2021-11-23 13:30:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17739 states, 17718 states have (on average 1.1598374534371825) internal successors, (20550), 17720 states have internal predecessors, (20550), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:30:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17739 states to 17739 states and 20574 transitions. [2021-11-23 13:30:18,506 INFO L78 Accepts]: Start accepts. Automaton has 17739 states and 20574 transitions. Word has length 3233 [2021-11-23 13:30:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:30:18,509 INFO L470 AbstractCegarLoop]: Abstraction has 17739 states and 20574 transitions. [2021-11-23 13:30:18,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 17739 states and 20574 transitions. [2021-11-23 13:30:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3243 [2021-11-23 13:30:18,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:30:18,595 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:30:18,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:30:18,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:18,796 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:30:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:30:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash -183963978, now seen corresponding path program 1 times [2021-11-23 13:30:18,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:30:18,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419942187] [2021-11-23 13:30:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:18,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:30:19,479 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:30:19,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850512948] [2021-11-23 13:30:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:19,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:19,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:19,481 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:30:19,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 13:30:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:30:25,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 31393 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:30:25,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:30:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 102480 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102473 trivial. 0 not checked. [2021-11-23 13:30:29,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:30:29,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:30:29,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419942187] [2021-11-23 13:30:29,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:30:29,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850512948] [2021-11-23 13:30:29,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850512948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:30:29,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:30:29,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:30:29,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084662713] [2021-11-23 13:30:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:30:29,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:30:29,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:30:29,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:30:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:30:29,779 INFO L87 Difference]: Start difference. First operand 17739 states and 20574 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:32,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:30:32,692 INFO L93 Difference]: Finished difference Result 35477 states and 41148 transitions. [2021-11-23 13:30:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:30:32,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 3242 [2021-11-23 13:30:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:30:32,721 INFO L225 Difference]: With dead ends: 35477 [2021-11-23 13:30:32,721 INFO L226 Difference]: Without dead ends: 17766 [2021-11-23 13:30:32,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3241 GetRequests, 3240 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:30:32,748 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 18 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 8679 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:30:32,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 8679 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:30:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17766 states. [2021-11-23 13:30:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17766 to 17742. [2021-11-23 13:30:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17742 states, 17721 states have (on average 1.159810394447266) internal successors, (20553), 17723 states have internal predecessors, (20553), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:30:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17742 states to 17742 states and 20577 transitions. [2021-11-23 13:30:35,860 INFO L78 Accepts]: Start accepts. Automaton has 17742 states and 20577 transitions. Word has length 3242 [2021-11-23 13:30:35,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:30:35,863 INFO L470 AbstractCegarLoop]: Abstraction has 17742 states and 20577 transitions. [2021-11-23 13:30:35,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 17742 states and 20577 transitions. [2021-11-23 13:30:35,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3252 [2021-11-23 13:30:35,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:30:35,965 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:30:36,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:30:36,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-23 13:30:36,170 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:30:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:30:36,171 INFO L85 PathProgramCache]: Analyzing trace with hash -899044657, now seen corresponding path program 1 times [2021-11-23 13:30:36,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:30:36,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320211937] [2021-11-23 13:30:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:36,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:30:36,820 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:30:36,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603525797] [2021-11-23 13:30:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:36,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:36,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:36,823 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:30:36,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 13:30:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:30:42,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 31479 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:30:42,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:30:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 102481 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102474 trivial. 0 not checked. [2021-11-23 13:30:46,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:30:46,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:30:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320211937] [2021-11-23 13:30:46,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:30:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603525797] [2021-11-23 13:30:46,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603525797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:30:46,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:30:46,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:30:46,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430019341] [2021-11-23 13:30:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:30:46,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:30:46,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:30:46,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:30:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:30:46,986 INFO L87 Difference]: Start difference. First operand 17742 states and 20577 transitions. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:30:49,948 INFO L93 Difference]: Finished difference Result 35471 states and 41145 transitions. [2021-11-23 13:30:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:30:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 3251 [2021-11-23 13:30:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:30:49,976 INFO L225 Difference]: With dead ends: 35471 [2021-11-23 13:30:49,977 INFO L226 Difference]: Without dead ends: 17757 [2021-11-23 13:30:49,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3250 GetRequests, 3249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:30:50,000 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 4 mSDsluCounter, 4341 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8687 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:30:50,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 8687 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:30:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17757 states. [2021-11-23 13:30:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17757 to 17748. [2021-11-23 13:30:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17748 states, 17727 states have (on average 1.1597563039431376) internal successors, (20559), 17729 states have internal predecessors, (20559), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:30:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17748 states to 17748 states and 20583 transitions. [2021-11-23 13:30:53,026 INFO L78 Accepts]: Start accepts. Automaton has 17748 states and 20583 transitions. Word has length 3251 [2021-11-23 13:30:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:30:53,029 INFO L470 AbstractCegarLoop]: Abstraction has 17748 states and 20583 transitions. [2021-11-23 13:30:53,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 17748 states and 20583 transitions. [2021-11-23 13:30:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3254 [2021-11-23 13:30:53,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:30:53,136 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:30:53,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:30:53,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-23 13:30:53,350 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:30:53,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:30:53,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2131646677, now seen corresponding path program 1 times [2021-11-23 13:30:53,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:30:53,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435715592] [2021-11-23 13:30:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:53,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:30:53,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:30:54,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994977518] [2021-11-23 13:30:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:54,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:54,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:54,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:30:54,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 13:31:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:31:00,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 31487 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:31:00,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:31:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 102482 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102475 trivial. 0 not checked. [2021-11-23 13:31:04,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:31:04,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:31:04,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435715592] [2021-11-23 13:31:04,335 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:31:04,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994977518] [2021-11-23 13:31:04,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994977518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:31:04,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:31:04,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:31:04,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981133860] [2021-11-23 13:31:04,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:31:04,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:31:04,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:31:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:31:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:31:04,339 INFO L87 Difference]: Start difference. First operand 17748 states and 20583 transitions. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:31:10,318 INFO L93 Difference]: Finished difference Result 52852 states and 61254 transitions. [2021-11-23 13:31:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:31:10,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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 3253 [2021-11-23 13:31:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:31:10,382 INFO L225 Difference]: With dead ends: 52852 [2021-11-23 13:31:10,382 INFO L226 Difference]: Without dead ends: 35132 [2021-11-23 13:31:10,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3252 GetRequests, 3251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:31:10,406 INFO L933 BasicCegarLoop]: 8498 mSDtfsCounter, 4172 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 12840 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:31:10,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4174 Valid, 12840 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:31:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35132 states. [2021-11-23 13:31:13,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35132 to 17766. [2021-11-23 13:31:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17766 states, 17745 states have (on average 1.1597633136094674) internal successors, (20580), 17747 states have internal predecessors, (20580), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:31:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17766 states to 17766 states and 20604 transitions. [2021-11-23 13:31:13,662 INFO L78 Accepts]: Start accepts. Automaton has 17766 states and 20604 transitions. Word has length 3253 [2021-11-23 13:31:13,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:31:13,665 INFO L470 AbstractCegarLoop]: Abstraction has 17766 states and 20604 transitions. [2021-11-23 13:31:13,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:13,665 INFO L276 IsEmpty]: Start isEmpty. Operand 17766 states and 20604 transitions. [2021-11-23 13:31:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3260 [2021-11-23 13:31:13,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:31:13,751 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:31:13,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-23 13:31:13,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-23 13:31:13,952 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:31:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:31:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1022592349, now seen corresponding path program 1 times [2021-11-23 13:31:13,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:31:13,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401870969] [2021-11-23 13:31:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:31:13,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:31:14,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:31:14,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582974454] [2021-11-23 13:31:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:31:14,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:31:14,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:31:14,564 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:31:14,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 13:31:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:31:21,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 31500 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 13:31:21,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:31:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 102484 backedges. 7 proven. 79639 refuted. 0 times theorem prover too weak. 22838 trivial. 0 not checked. [2021-11-23 13:31:26,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:31:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 102484 backedges. 7 proven. 79639 refuted. 0 times theorem prover too weak. 22838 trivial. 0 not checked. [2021-11-23 13:31:34,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:31:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401870969] [2021-11-23 13:31:34,095 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:31:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582974454] [2021-11-23 13:31:34,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582974454] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:31:34,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:31:34,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-23 13:31:34,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455274266] [2021-11-23 13:31:34,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:31:34,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 13:31:34,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:31:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 13:31:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-23 13:31:34,106 INFO L87 Difference]: Start difference. First operand 17766 states and 20604 transitions. Second operand has 32 states, 32 states have (on average 41.1875) internal successors, (1318), 32 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:31:44,407 INFO L93 Difference]: Finished difference Result 52978 states and 62250 transitions. [2021-11-23 13:31:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 13:31:44,408 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 41.1875) internal successors, (1318), 32 states have internal predecessors, (1318), 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 3259 [2021-11-23 13:31:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:31:44,461 INFO L225 Difference]: With dead ends: 52978 [2021-11-23 13:31:44,462 INFO L226 Difference]: Without dead ends: 35240 [2021-11-23 13:31:44,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6516 GetRequests, 6486 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-23 13:31:44,486 INFO L933 BasicCegarLoop]: 6890 mSDtfsCounter, 13082 mSDsluCounter, 52641 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13086 SdHoareTripleChecker+Valid, 59531 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:31:44,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13086 Valid, 59531 Invalid, 655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [268 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 13:31:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35240 states. [2021-11-23 13:31:48,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35240 to 24348. [2021-11-23 13:31:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24348 states, 24327 states have (on average 1.1264027623628068) internal successors, (27402), 24329 states have internal predecessors, (27402), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 13:31:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24348 states to 24348 states and 27426 transitions. [2021-11-23 13:31:48,918 INFO L78 Accepts]: Start accepts. Automaton has 24348 states and 27426 transitions. Word has length 3259 [2021-11-23 13:31:48,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:31:48,919 INFO L470 AbstractCegarLoop]: Abstraction has 24348 states and 27426 transitions. [2021-11-23 13:31:48,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 41.1875) internal successors, (1318), 32 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 24348 states and 27426 transitions. [2021-11-23 13:31:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5406 [2021-11-23 13:31:49,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:31:49,112 INFO L514 BasicCegarLoop]: trace histogram [240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:31:49,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:31:49,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:31:49,313 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:31:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:31:49,314 INFO L85 PathProgramCache]: Analyzing trace with hash -825373759, now seen corresponding path program 2 times [2021-11-23 13:31:49,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:31:49,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122544188] [2021-11-23 13:31:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:31:49,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:31:50,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:31:50,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503081290] [2021-11-23 13:31:50,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:31:50,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:31:50,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:31:50,265 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:31:50,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b3968-4507-4542-9e80-4d3395c4e31d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 13:32:01,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:32:01,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:32:01,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 51108 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 13:32:01,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:32:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 416011 backedges. 7 proven. 3945 refuted. 0 times theorem prover too weak. 412059 trivial. 0 not checked. [2021-11-23 13:32:08,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:32:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 416011 backedges. 7 proven. 3945 refuted. 0 times theorem prover too weak. 412059 trivial. 0 not checked. [2021-11-23 13:32:15,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:32:15,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122544188] [2021-11-23 13:32:15,515 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:32:15,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503081290] [2021-11-23 13:32:15,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503081290] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:32:15,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:32:15,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-23 13:32:15,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61787627] [2021-11-23 13:32:15,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:32:15,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-23 13:32:15,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:32:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-23 13:32:15,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-23 13:32:15,526 INFO L87 Difference]: Start difference. First operand 24348 states and 27426 transitions. Second operand has 64 states, 64 states have (on average 18.765625) internal successors, (1201), 64 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:32:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:32:31,465 INFO L93 Difference]: Finished difference Result 74622 states and 88065 transitions. [2021-11-23 13:32:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-23 13:32:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 18.765625) internal successors, (1201), 64 states have internal predecessors, (1201), 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 5405 [2021-11-23 13:32:31,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:32:31,586 INFO L225 Difference]: With dead ends: 74622 [2021-11-23 13:32:31,586 INFO L226 Difference]: Without dead ends: 50302 [2021-11-23 13:32:31,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10808 GetRequests, 10746 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-23 13:32:31,630 INFO L933 BasicCegarLoop]: 6894 mSDtfsCounter, 49762 mSDsluCounter, 57928 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49770 SdHoareTripleChecker+Valid, 64822 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:32:31,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49770 Valid, 64822 Invalid, 875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [382 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 13:32:31,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50302 states.