./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/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_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/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 32bit --witnessprinter.graph.data.programhash 866b4070887ce539f36e137c6ed6e587ee3f43d9563c34ef0dd3382aa4e2313a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:10:32,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:10:32,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:10:32,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:10:32,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:10:32,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:10:32,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:10:32,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:10:32,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:10:32,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:10:32,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:10:32,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:10:32,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:10:32,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:10:32,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:10:32,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:10:32,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:10:32,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:10:32,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:10:32,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:10:32,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:10:32,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:10:32,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:10:32,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:10:32,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:10:32,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:10:32,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:10:32,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:10:32,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:10:32,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:10:32,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:10:32,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:10:32,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:10:32,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:10:32,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:10:32,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:10:32,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:10:32,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:10:32,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:10:32,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:10:32,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:10:32,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 14:10:32,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:10:32,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:10:32,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:10:32,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:10:32,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:10:32,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:10:32,599 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:10:32,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:10:32,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:10:32,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:10:32,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:10:32,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:10:32,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:10:32,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:10:32,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:10:32,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:10:32,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:10:32,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:10:32,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:10:32,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:10:32,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:10:32,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:10:32,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:10:32,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:10:32,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:10:32,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:10:32,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:10:32,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:10:32,605 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:10:32,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:10:32,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:10:32,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:10:32,606 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_e2c2ba80-509d-4312-9645-b0245f7bc715/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 866b4070887ce539f36e137c6ed6e587ee3f43d9563c34ef0dd3382aa4e2313a [2021-11-23 14:10:32,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:10:32,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:10:32,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:10:32,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:10:32,911 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:10:32,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c [2021-11-23 14:10:32,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/data/06f018137/363737e08ab847459a153f1a25868532/FLAG3d1c9939f [2021-11-23 14:10:33,769 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:10:33,770 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c [2021-11-23 14:10:33,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/data/06f018137/363737e08ab847459a153f1a25868532/FLAG3d1c9939f [2021-11-23 14:10:33,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/data/06f018137/363737e08ab847459a153f1a25868532 [2021-11-23 14:10:33,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:10:33,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:10:33,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:10:33,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:10:33,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:10:33,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:33" (1/1) ... [2021-11-23 14:10:33,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4207132e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:33, skipping insertion in model container [2021-11-23 14:10:33,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:33" (1/1) ... [2021-11-23 14:10:33,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:10:34,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:10:34,725 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_e2c2ba80-509d-4312-9645-b0245f7bc715/sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c[71150,71163] [2021-11-23 14:10:34,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:10:34,745 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:10:34,922 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_e2c2ba80-509d-4312-9645-b0245f7bc715/sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c[71150,71163] [2021-11-23 14:10:34,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:10:34,961 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:10:34,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34 WrapperNode [2021-11-23 14:10:34,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:10:34,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:10:34,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:10:34,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:10:34,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:35,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:35,450 INFO L137 Inliner]: procedures = 94, calls = 342, calls flagged for inlining = 195, calls inlined = 1041, statements flattened = 35043 [2021-11-23 14:10:35,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:10:35,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:10:35,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:10:35,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:10:35,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:35,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:35,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:35,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:35,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:36,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:36,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:36,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:10:36,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:10:36,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:10:36,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:10:36,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (1/1) ... [2021-11-23 14:10:36,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:10:36,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:10:36,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:10:36,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c2ba80-509d-4312-9645-b0245f7bc715/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:10:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:10:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:10:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:10:36,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:10:36,606 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:10:36,608 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:10:48,032 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:10:48,120 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:10:48,120 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 14:10:48,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:48 BoogieIcfgContainer [2021-11-23 14:10:48,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:10:48,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:10:48,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:10:48,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:10:48,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:10:33" (1/3) ... [2021-11-23 14:10:48,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4658f1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:48, skipping insertion in model container [2021-11-23 14:10:48,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:34" (2/3) ... [2021-11-23 14:10:48,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4658f1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:48, skipping insertion in model container [2021-11-23 14:10:48,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:48" (3/3) ... [2021-11-23 14:10:48,140 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product31.cil.c [2021-11-23 14:10:48,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:10:48,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 14:10:48,236 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:10:48,243 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 14:10:48,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 14:10:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 8991 states, 8985 states have (on average 1.8717863105175292) internal successors, (16818), 8990 states have internal predecessors, (16818), 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 14:10:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 14:10:48,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:48,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:10:48,437 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1570087273, now seen corresponding path program 1 times [2021-11-23 14:10:48,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:48,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194165903] [2021-11-23 14:10:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:48,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:48,809 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 14:10:48,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:48,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194165903] [2021-11-23 14:10:48,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194165903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:48,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:48,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:10:48,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917170506] [2021-11-23 14:10:48,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:48,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:10:48,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:10:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:10:48,928 INFO L87 Difference]: Start difference. First operand has 8991 states, 8985 states have (on average 1.8717863105175292) internal successors, (16818), 8990 states have internal predecessors, (16818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 14:10:49,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:10:49,783 INFO L93 Difference]: Finished difference Result 21593 states and 40397 transitions. [2021-11-23 14:10:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:10:49,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-23 14:10:49,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:10:49,902 INFO L225 Difference]: With dead ends: 21593 [2021-11-23 14:10:49,902 INFO L226 Difference]: Without dead ends: 12601 [2021-11-23 14:10:49,922 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 14:10:49,926 INFO L933 BasicCegarLoop]: 23576 mSDtfsCounter, 16779 mSDsluCounter, 6789 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16779 SdHoareTripleChecker+Valid, 30365 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:10:49,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16779 Valid, 30365 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:10:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-11-23 14:10:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 8979. [2021-11-23 14:10:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8979 states, 8974 states have (on average 1.8709605527078226) internal successors, (16790), 8978 states have internal predecessors, (16790), 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 14:10:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8979 states to 8979 states and 16790 transitions. [2021-11-23 14:10:50,325 INFO L78 Accepts]: Start accepts. Automaton has 8979 states and 16790 transitions. Word has length 48 [2021-11-23 14:10:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:10:50,326 INFO L470 AbstractCegarLoop]: Abstraction has 8979 states and 16790 transitions. [2021-11-23 14:10:50,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 14:10:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 8979 states and 16790 transitions. [2021-11-23 14:10:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 14:10:50,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:50,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:10:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:10:50,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:50,333 INFO L85 PathProgramCache]: Analyzing trace with hash -602583984, now seen corresponding path program 1 times [2021-11-23 14:10:50,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:50,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827758325] [2021-11-23 14:10:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:50,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:50,425 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 14:10:50,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:50,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827758325] [2021-11-23 14:10:50,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827758325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:50,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:50,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:10:50,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330714658] [2021-11-23 14:10:50,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:50,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:10:50,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:50,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:10:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:10:50,430 INFO L87 Difference]: Start difference. First operand 8979 states and 16790 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 14:10:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:10:51,365 INFO L93 Difference]: Finished difference Result 25090 states and 46917 transitions. [2021-11-23 14:10:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:10:51,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2021-11-23 14:10:51,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:10:51,468 INFO L225 Difference]: With dead ends: 25090 [2021-11-23 14:10:51,469 INFO L226 Difference]: Without dead ends: 16133 [2021-11-23 14:10:51,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:10:51,488 INFO L933 BasicCegarLoop]: 30144 mSDtfsCounter, 33313 mSDsluCounter, 20251 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33313 SdHoareTripleChecker+Valid, 50395 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:10:51,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33313 Valid, 50395 Invalid, 37 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:10:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16133 states. [2021-11-23 14:10:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16133 to 8955. [2021-11-23 14:10:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8955 states, 8950 states have (on average 1.8700558659217876) internal successors, (16737), 8954 states have internal predecessors, (16737), 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 14:10:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 16737 transitions. [2021-11-23 14:10:51,874 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 16737 transitions. Word has length 53 [2021-11-23 14:10:51,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:10:51,875 INFO L470 AbstractCegarLoop]: Abstraction has 8955 states and 16737 transitions. [2021-11-23 14:10:51,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 14:10:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 16737 transitions. [2021-11-23 14:10:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 14:10:51,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:51,883 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, 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 14:10:51,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:10:51,884 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:51,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash -210185483, now seen corresponding path program 1 times [2021-11-23 14:10:51,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:51,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380146114] [2021-11-23 14:10:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:51,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:51,991 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 14:10:51,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:51,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380146114] [2021-11-23 14:10:51,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380146114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:51,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:51,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:10:51,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257218086] [2021-11-23 14:10:51,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:51,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:10:51,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:10:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:10:52,001 INFO L87 Difference]: Start difference. First operand 8955 states and 16737 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 14:10:52,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:10:52,974 INFO L93 Difference]: Finished difference Result 28655 states and 53567 transitions. [2021-11-23 14:10:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:10:52,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2021-11-23 14:10:52,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:10:53,031 INFO L225 Difference]: With dead ends: 28655 [2021-11-23 14:10:53,031 INFO L226 Difference]: Without dead ends: 19722 [2021-11-23 14:10:53,053 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 14:10:53,061 INFO L933 BasicCegarLoop]: 36777 mSDtfsCounter, 33353 mSDsluCounter, 26854 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33353 SdHoareTripleChecker+Valid, 63631 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:10:53,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33353 Valid, 63631 Invalid, 159 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:10:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19722 states. [2021-11-23 14:10:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19722 to 8955. [2021-11-23 14:10:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8955 states, 8950 states have (on average 1.8699441340782124) internal successors, (16736), 8954 states have internal predecessors, (16736), 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 14:10:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 16736 transitions. [2021-11-23 14:10:53,634 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 16736 transitions. Word has length 54 [2021-11-23 14:10:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:10:53,634 INFO L470 AbstractCegarLoop]: Abstraction has 8955 states and 16736 transitions. [2021-11-23 14:10:53,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 14:10:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 16736 transitions. [2021-11-23 14:10:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 14:10:53,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:53,643 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, 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 14:10:53,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:10:53,643 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:53,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 489239149, now seen corresponding path program 1 times [2021-11-23 14:10:53,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:53,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549385486] [2021-11-23 14:10:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:53,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:53,698 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 14:10:53,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:53,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549385486] [2021-11-23 14:10:53,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549385486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:53,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:53,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:10:53,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690171335] [2021-11-23 14:10:53,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:53,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:10:53,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:53,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:10:53,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:10:53,702 INFO L87 Difference]: Start difference. First operand 8955 states and 16736 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 14:10:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:10:54,470 INFO L93 Difference]: Finished difference Result 21483 states and 40162 transitions. [2021-11-23 14:10:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:10:54,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-11-23 14:10:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:10:54,502 INFO L225 Difference]: With dead ends: 21483 [2021-11-23 14:10:54,502 INFO L226 Difference]: Without dead ends: 12550 [2021-11-23 14:10:54,513 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 14:10:54,514 INFO L933 BasicCegarLoop]: 23361 mSDtfsCounter, 33363 mSDsluCounter, 6726 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33363 SdHoareTripleChecker+Valid, 30087 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:10:54,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33363 Valid, 30087 Invalid, 162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:10:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12550 states. [2021-11-23 14:10:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12550 to 8955. [2021-11-23 14:10:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8955 states, 8950 states have (on average 1.8692737430167599) internal successors, (16730), 8954 states have internal predecessors, (16730), 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 14:10:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 16730 transitions. [2021-11-23 14:10:54,789 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 16730 transitions. Word has length 55 [2021-11-23 14:10:54,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:10:54,791 INFO L470 AbstractCegarLoop]: Abstraction has 8955 states and 16730 transitions. [2021-11-23 14:10:54,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 14:10:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 16730 transitions. [2021-11-23 14:10:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 14:10:54,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:54,796 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, 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 14:10:54,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:10:54,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash 270651664, now seen corresponding path program 1 times [2021-11-23 14:10:54,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:54,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697923957] [2021-11-23 14:10:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:54,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:54,852 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 14:10:54,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:54,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697923957] [2021-11-23 14:10:54,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697923957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:54,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:54,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:10:54,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811330946] [2021-11-23 14:10:54,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:54,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:10:54,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:10:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:10:54,855 INFO L87 Difference]: Start difference. First operand 8955 states and 16730 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 14:10:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:10:55,609 INFO L93 Difference]: Finished difference Result 21483 states and 40150 transitions. [2021-11-23 14:10:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:10:55,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-11-23 14:10:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:10:55,644 INFO L225 Difference]: With dead ends: 21483 [2021-11-23 14:10:55,644 INFO L226 Difference]: Without dead ends: 12550 [2021-11-23 14:10:55,656 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 14:10:55,657 INFO L933 BasicCegarLoop]: 23361 mSDtfsCounter, 33353 mSDsluCounter, 6726 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33353 SdHoareTripleChecker+Valid, 30087 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:10:55,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33353 Valid, 30087 Invalid, 150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:10:55,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12550 states. [2021-11-23 14:10:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12550 to 8955. [2021-11-23 14:10:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8955 states, 8950 states have (on average 1.8686033519553074) internal successors, (16724), 8954 states have internal predecessors, (16724), 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 14:10:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 16724 transitions. [2021-11-23 14:10:56,056 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 16724 transitions. Word has length 56 [2021-11-23 14:10:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:10:56,057 INFO L470 AbstractCegarLoop]: Abstraction has 8955 states and 16724 transitions. [2021-11-23 14:10:56,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 14:10:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 16724 transitions. [2021-11-23 14:10:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 14:10:56,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:56,065 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, 1, 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 14:10:56,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:10:56,065 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1658459624, now seen corresponding path program 1 times [2021-11-23 14:10:56,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:56,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477855444] [2021-11-23 14:10:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:56,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:56,132 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 14:10:56,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:56,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477855444] [2021-11-23 14:10:56,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477855444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:56,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:56,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:10:56,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678689187] [2021-11-23 14:10:56,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:56,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:10:56,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:56,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:10:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:10:56,135 INFO L87 Difference]: Start difference. First operand 8955 states and 16724 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 14:10:56,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:10:56,660 INFO L93 Difference]: Finished difference Result 21483 states and 40138 transitions. [2021-11-23 14:10:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:10:56,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-23 14:10:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:10:56,692 INFO L225 Difference]: With dead ends: 21483 [2021-11-23 14:10:56,692 INFO L226 Difference]: Without dead ends: 12550 [2021-11-23 14:10:56,707 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 14:10:56,708 INFO L933 BasicCegarLoop]: 23361 mSDtfsCounter, 33343 mSDsluCounter, 6726 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33343 SdHoareTripleChecker+Valid, 30087 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:10:56,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33343 Valid, 30087 Invalid, 138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:10:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12550 states. [2021-11-23 14:10:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12550 to 8955. [2021-11-23 14:10:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8955 states, 8950 states have (on average 1.8679329608938549) internal successors, (16718), 8954 states have internal predecessors, (16718), 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 14:10:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 16718 transitions. [2021-11-23 14:10:57,215 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 16718 transitions. Word has length 57 [2021-11-23 14:10:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:10:57,216 INFO L470 AbstractCegarLoop]: Abstraction has 8955 states and 16718 transitions. [2021-11-23 14:10:57,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 14:10:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 16718 transitions. [2021-11-23 14:10:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 14:10:57,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:57,220 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, 1, 1, 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 14:10:57,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 14:10:57,221 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1304918827, now seen corresponding path program 1 times [2021-11-23 14:10:57,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:57,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551102728] [2021-11-23 14:10:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:57,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:57,313 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 14:10:57,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:57,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551102728] [2021-11-23 14:10:57,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551102728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:57,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:57,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:10:57,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806902518] [2021-11-23 14:10:57,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:57,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:10:57,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:10:57,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:10:57,317 INFO L87 Difference]: Start difference. First operand 8955 states and 16718 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 14:10:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:10:58,085 INFO L93 Difference]: Finished difference Result 21483 states and 40126 transitions. [2021-11-23 14:10:58,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:10:58,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2021-11-23 14:10:58,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:10:58,109 INFO L225 Difference]: With dead ends: 21483 [2021-11-23 14:10:58,109 INFO L226 Difference]: Without dead ends: 12550 [2021-11-23 14:10:58,122 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 14:10:58,126 INFO L933 BasicCegarLoop]: 23361 mSDtfsCounter, 33333 mSDsluCounter, 6726 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33333 SdHoareTripleChecker+Valid, 30087 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:10:58,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33333 Valid, 30087 Invalid, 126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:10:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12550 states. [2021-11-23 14:10:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12550 to 8955. [2021-11-23 14:10:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8955 states, 8950 states have (on average 1.8672625698324021) internal successors, (16712), 8954 states have internal predecessors, (16712), 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 14:10:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 16712 transitions. [2021-11-23 14:10:58,418 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 16712 transitions. Word has length 58 [2021-11-23 14:10:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:10:58,418 INFO L470 AbstractCegarLoop]: Abstraction has 8955 states and 16712 transitions. [2021-11-23 14:10:58,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 14:10:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 16712 transitions. [2021-11-23 14:10:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 14:10:58,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:58,422 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, 1, 1, 1, 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 14:10:58,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 14:10:58,422 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1490825885, now seen corresponding path program 1 times [2021-11-23 14:10:58,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:58,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313835510] [2021-11-23 14:10:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:58,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:58,574 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 14:10:58,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:58,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313835510] [2021-11-23 14:10:58,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313835510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:58,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:58,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:10:58,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094096155] [2021-11-23 14:10:58,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:58,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:10:58,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:10:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:10:58,578 INFO L87 Difference]: Start difference. First operand 8955 states and 16712 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:10:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:10:59,123 INFO L93 Difference]: Finished difference Result 25048 states and 46783 transitions. [2021-11-23 14:10:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:10:59,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-23 14:10:59,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:10:59,146 INFO L225 Difference]: With dead ends: 25048 [2021-11-23 14:10:59,147 INFO L226 Difference]: Without dead ends: 16121 [2021-11-23 14:10:59,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:10:59,153 INFO L933 BasicCegarLoop]: 30063 mSDtfsCounter, 33354 mSDsluCounter, 20118 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33354 SdHoareTripleChecker+Valid, 50181 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:10:59,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33354 Valid, 50181 Invalid, 57 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:10:59,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16121 states. [2021-11-23 14:10:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16121 to 8957. [2021-11-23 14:10:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 8952 states have (on average 1.8669571045576407) internal successors, (16713), 8956 states have internal predecessors, (16713), 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 14:10:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 16713 transitions. [2021-11-23 14:10:59,484 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 16713 transitions. Word has length 59 [2021-11-23 14:10:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:10:59,484 INFO L470 AbstractCegarLoop]: Abstraction has 8957 states and 16713 transitions. [2021-11-23 14:10:59,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:10:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 16713 transitions. [2021-11-23 14:10:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 14:10:59,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:10:59,490 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, 1, 1, 1, 1, 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 14:10:59,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 14:10:59,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:10:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:10:59,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1190095478, now seen corresponding path program 1 times [2021-11-23 14:10:59,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:10:59,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970368180] [2021-11-23 14:10:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:10:59,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:10:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:10:59,566 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 14:10:59,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:10:59,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970368180] [2021-11-23 14:10:59,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970368180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:10:59,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:10:59,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:10:59,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204116914] [2021-11-23 14:10:59,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:10:59,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:10:59,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:10:59,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:10:59,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:10:59,570 INFO L87 Difference]: Start difference. First operand 8957 states and 16713 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 14:11:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:03,854 INFO L93 Difference]: Finished difference Result 24418 states and 45538 transitions. [2021-11-23 14:11:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:11:03,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-23 14:11:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:03,877 INFO L225 Difference]: With dead ends: 24418 [2021-11-23 14:11:03,877 INFO L226 Difference]: Without dead ends: 15497 [2021-11-23 14:11:03,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:11:03,884 INFO L933 BasicCegarLoop]: 16765 mSDtfsCounter, 40896 mSDsluCounter, 11933 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40896 SdHoareTripleChecker+Valid, 28698 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:03,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40896 Valid, 28698 Invalid, 3825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [831 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 14:11:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15497 states. [2021-11-23 14:11:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15497 to 8957. [2021-11-23 14:11:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 8952 states have (on average 1.82171581769437) internal successors, (16308), 8956 states have internal predecessors, (16308), 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 14:11:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 16308 transitions. [2021-11-23 14:11:04,355 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 16308 transitions. Word has length 60 [2021-11-23 14:11:04,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:04,355 INFO L470 AbstractCegarLoop]: Abstraction has 8957 states and 16308 transitions. [2021-11-23 14:11:04,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 14:11:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 16308 transitions. [2021-11-23 14:11:04,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 14:11:04,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:04,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:04,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 14:11:04,361 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:11:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1271598360, now seen corresponding path program 1 times [2021-11-23 14:11:04,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041028488] [2021-11-23 14:11:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:04,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:04,450 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 14:11:04,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:04,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041028488] [2021-11-23 14:11:04,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041028488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:04,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:04,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:04,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780737594] [2021-11-23 14:11:04,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:04,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:11:04,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:11:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:11:04,453 INFO L87 Difference]: Start difference. First operand 8957 states and 16308 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 14:11:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:13,399 INFO L93 Difference]: Finished difference Result 66853 states and 123321 transitions. [2021-11-23 14:11:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 14:11:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2021-11-23 14:11:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:13,482 INFO L225 Difference]: With dead ends: 66853 [2021-11-23 14:11:13,482 INFO L226 Difference]: Without dead ends: 57959 [2021-11-23 14:11:13,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:11:13,495 INFO L933 BasicCegarLoop]: 46244 mSDtfsCounter, 110514 mSDsluCounter, 189746 mSDsCounter, 0 mSdLazyCounter, 7912 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110514 SdHoareTripleChecker+Valid, 235990 SdHoareTripleChecker+Invalid, 8634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 7912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:13,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110514 Valid, 235990 Invalid, 8634 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [722 Valid, 7912 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 14:11:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57959 states. [2021-11-23 14:11:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57959 to 17746. [2021-11-23 14:11:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17746 states, 17741 states have (on average 1.8233470492080492) internal successors, (32348), 17745 states have internal predecessors, (32348), 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 14:11:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17746 states to 17746 states and 32348 transitions. [2021-11-23 14:11:14,434 INFO L78 Accepts]: Start accepts. Automaton has 17746 states and 32348 transitions. Word has length 72 [2021-11-23 14:11:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:14,434 INFO L470 AbstractCegarLoop]: Abstraction has 17746 states and 32348 transitions. [2021-11-23 14:11:14,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 14:11:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 17746 states and 32348 transitions. [2021-11-23 14:11:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 14:11:14,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:14,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:14,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 14:11:14,443 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:11:14,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1074839442, now seen corresponding path program 1 times [2021-11-23 14:11:14,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:14,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235310002] [2021-11-23 14:11:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:14,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:14,505 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 14:11:14,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:14,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235310002] [2021-11-23 14:11:14,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235310002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:14,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:14,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:11:14,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203117521] [2021-11-23 14:11:14,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:14,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:11:14,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:11:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:11:14,508 INFO L87 Difference]: Start difference. First operand 17746 states and 32348 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:11:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:15,694 INFO L93 Difference]: Finished difference Result 46180 states and 84146 transitions. [2021-11-23 14:11:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:11:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-23 14:11:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:15,731 INFO L225 Difference]: With dead ends: 46180 [2021-11-23 14:11:15,732 INFO L226 Difference]: Without dead ends: 31920 [2021-11-23 14:11:15,741 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 14:11:15,742 INFO L933 BasicCegarLoop]: 16250 mSDtfsCounter, 16150 mSDsluCounter, 12949 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16150 SdHoareTripleChecker+Valid, 29199 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:15,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16150 Valid, 29199 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:11:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31920 states. [2021-11-23 14:11:16,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31920 to 31894. [2021-11-23 14:11:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31894 states, 31889 states have (on average 1.8217567186177053) internal successors, (58094), 31893 states have internal predecessors, (58094), 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 14:11:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31894 states to 31894 states and 58094 transitions. [2021-11-23 14:11:16,631 INFO L78 Accepts]: Start accepts. Automaton has 31894 states and 58094 transitions. Word has length 75 [2021-11-23 14:11:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:16,631 INFO L470 AbstractCegarLoop]: Abstraction has 31894 states and 58094 transitions. [2021-11-23 14:11:16,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:11:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 31894 states and 58094 transitions. [2021-11-23 14:11:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 14:11:16,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:16,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:16,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 14:11:16,639 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:11:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:16,640 INFO L85 PathProgramCache]: Analyzing trace with hash -38631595, now seen corresponding path program 1 times [2021-11-23 14:11:16,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:16,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618276060] [2021-11-23 14:11:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:16,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:16,846 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 14:11:16,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:16,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618276060] [2021-11-23 14:11:16,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618276060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:16,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:16,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:16,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961245751] [2021-11-23 14:11:16,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:16,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:11:16,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:11:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:11:16,850 INFO L87 Difference]: Start difference. First operand 31894 states and 58094 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) 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 14:11:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:25,128 INFO L93 Difference]: Finished difference Result 121231 states and 223505 transitions. [2021-11-23 14:11:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 14:11:25,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) 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 76 [2021-11-23 14:11:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:25,250 INFO L225 Difference]: With dead ends: 121231 [2021-11-23 14:11:25,250 INFO L226 Difference]: Without dead ends: 78321 [2021-11-23 14:11:25,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-23 14:11:25,281 INFO L933 BasicCegarLoop]: 35146 mSDtfsCounter, 104496 mSDsluCounter, 129481 mSDsCounter, 0 mSdLazyCounter, 5586 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104496 SdHoareTripleChecker+Valid, 164627 SdHoareTripleChecker+Invalid, 6525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 5586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:25,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104496 Valid, 164627 Invalid, 6525 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [939 Valid, 5586 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 14:11:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78321 states. [2021-11-23 14:11:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78321 to 24836. [2021-11-23 14:11:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24836 states, 24831 states have (on average 1.8199025411783658) internal successors, (45190), 24835 states have internal predecessors, (45190), 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 14:11:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24836 states to 24836 states and 45190 transitions. [2021-11-23 14:11:26,521 INFO L78 Accepts]: Start accepts. Automaton has 24836 states and 45190 transitions. Word has length 76 [2021-11-23 14:11:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:26,521 INFO L470 AbstractCegarLoop]: Abstraction has 24836 states and 45190 transitions. [2021-11-23 14:11:26,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) 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 14:11:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 24836 states and 45190 transitions. [2021-11-23 14:11:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 14:11:26,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:26,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:26,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 14:11:26,527 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:11:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash -67274392, now seen corresponding path program 1 times [2021-11-23 14:11:26,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:26,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447648883] [2021-11-23 14:11:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:26,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:26,572 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 14:11:26,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:26,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447648883] [2021-11-23 14:11:26,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447648883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:26,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:26,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:26,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885997344] [2021-11-23 14:11:26,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:26,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:11:26,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:11:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:11:26,575 INFO L87 Difference]: Start difference. First operand 24836 states and 45190 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 14:11:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:27,395 INFO L93 Difference]: Finished difference Result 40745 states and 74135 transitions. [2021-11-23 14:11:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:11:27,395 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 76 [2021-11-23 14:11:27,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:27,416 INFO L225 Difference]: With dead ends: 40745 [2021-11-23 14:11:27,417 INFO L226 Difference]: Without dead ends: 15892 [2021-11-23 14:11:27,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 14:11:27,430 INFO L933 BasicCegarLoop]: 16108 mSDtfsCounter, 28611 mSDsluCounter, 19678 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28611 SdHoareTripleChecker+Valid, 35786 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:27,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28611 Valid, 35786 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:11:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15892 states. [2021-11-23 14:11:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15892 to 15892. [2021-11-23 14:11:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15892 states, 15890 states have (on average 1.8196979232221524) internal successors, (28915), 15891 states have internal predecessors, (28915), 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 14:11:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15892 states to 15892 states and 28915 transitions. [2021-11-23 14:11:28,162 INFO L78 Accepts]: Start accepts. Automaton has 15892 states and 28915 transitions. Word has length 76 [2021-11-23 14:11:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:28,163 INFO L470 AbstractCegarLoop]: Abstraction has 15892 states and 28915 transitions. [2021-11-23 14:11:28,163 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 14:11:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 15892 states and 28915 transitions. [2021-11-23 14:11:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-23 14:11:28,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:28,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:28,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 14:11:28,186 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:11:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:28,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1383479176, now seen corresponding path program 1 times [2021-11-23 14:11:28,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:28,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220811776] [2021-11-23 14:11:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:28,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:28,313 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 14:11:28,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:28,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220811776] [2021-11-23 14:11:28,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220811776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:28,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:28,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:28,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166776078] [2021-11-23 14:11:28,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:28,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:11:28,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:11:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:11:28,317 INFO L87 Difference]: Start difference. First operand 15892 states and 28915 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 14:11:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:29,317 INFO L93 Difference]: Finished difference Result 28858 states and 52221 transitions. [2021-11-23 14:11:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:11:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 216 [2021-11-23 14:11:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:29,343 INFO L225 Difference]: With dead ends: 28858 [2021-11-23 14:11:29,343 INFO L226 Difference]: Without dead ends: 16554 [2021-11-23 14:11:29,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 14:11:29,355 INFO L933 BasicCegarLoop]: 16085 mSDtfsCounter, 27109 mSDsluCounter, 21893 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27109 SdHoareTripleChecker+Valid, 37978 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:29,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27109 Valid, 37978 Invalid, 61 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:11:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16554 states. [2021-11-23 14:11:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16554 to 16550. [2021-11-23 14:11:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16550 states, 16548 states have (on average 1.8062001450326324) internal successors, (29889), 16549 states have internal predecessors, (29889), 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 14:11:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16550 states to 16550 states and 29889 transitions. [2021-11-23 14:11:29,964 INFO L78 Accepts]: Start accepts. Automaton has 16550 states and 29889 transitions. Word has length 216 [2021-11-23 14:11:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:29,964 INFO L470 AbstractCegarLoop]: Abstraction has 16550 states and 29889 transitions. [2021-11-23 14:11:29,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 14:11:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 16550 states and 29889 transitions. [2021-11-23 14:11:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-23 14:11:29,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:29,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:29,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 14:11:29,981 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:11:29,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 279620982, now seen corresponding path program 1 times [2021-11-23 14:11:29,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:29,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417863737] [2021-11-23 14:11:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:29,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:30,085 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 14:11:30,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417863737] [2021-11-23 14:11:30,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417863737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:30,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:30,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:11:30,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146138602] [2021-11-23 14:11:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:30,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:11:30,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:11:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:11:30,088 INFO L87 Difference]: Start difference. First operand 16550 states and 29889 transitions. Second operand has 6 states, 6 states have (on average 36.0) internal successors, (216), 5 states have internal predecessors, (216), 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 14:11:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:34,378 INFO L93 Difference]: Finished difference Result 53308 states and 97104 transitions. [2021-11-23 14:11:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 14:11:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 5 states have internal predecessors, (216), 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 216 [2021-11-23 14:11:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:34,439 INFO L225 Difference]: With dead ends: 53308 [2021-11-23 14:11:34,439 INFO L226 Difference]: Without dead ends: 38132 [2021-11-23 14:11:34,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:11:34,455 INFO L933 BasicCegarLoop]: 24541 mSDtfsCounter, 82637 mSDsluCounter, 57160 mSDsCounter, 0 mSdLazyCounter, 2952 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82637 SdHoareTripleChecker+Valid, 81701 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:34,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82637 Valid, 81701 Invalid, 3508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [556 Valid, 2952 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 14:11:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38132 states. [2021-11-23 14:11:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38132 to 16540. [2021-11-23 14:11:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16540 states, 16538 states have (on average 1.8060829604547104) internal successors, (29869), 16539 states have internal predecessors, (29869), 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 14:11:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16540 states to 16540 states and 29869 transitions. [2021-11-23 14:11:35,195 INFO L78 Accepts]: Start accepts. Automaton has 16540 states and 29869 transitions. Word has length 216 [2021-11-23 14:11:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:35,196 INFO L470 AbstractCegarLoop]: Abstraction has 16540 states and 29869 transitions. [2021-11-23 14:11:35,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 5 states have internal predecessors, (216), 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 14:11:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 16540 states and 29869 transitions. [2021-11-23 14:11:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-23 14:11:35,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:35,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:35,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 14:11:35,214 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:11:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1755588452, now seen corresponding path program 1 times [2021-11-23 14:11:35,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735666364] [2021-11-23 14:11:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:35,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:35,285 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 14:11:35,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:35,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735666364] [2021-11-23 14:11:35,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735666364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:35,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:35,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:11:35,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706179033] [2021-11-23 14:11:35,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:35,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:11:35,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:35,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:11:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:11:35,288 INFO L87 Difference]: Start difference. First operand 16540 states and 29869 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 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 14:11:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:36,920 INFO L93 Difference]: Finished difference Result 46092 states and 83279 transitions. [2021-11-23 14:11:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:11:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 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 234 [2021-11-23 14:11:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:36,964 INFO L225 Difference]: With dead ends: 46092 [2021-11-23 14:11:36,964 INFO L226 Difference]: Without dead ends: 30547 [2021-11-23 14:11:36,977 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 14:11:36,978 INFO L933 BasicCegarLoop]: 16824 mSDtfsCounter, 15894 mSDsluCounter, 13696 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15894 SdHoareTripleChecker+Valid, 30520 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:36,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15894 Valid, 30520 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:11:37,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30547 states. [2021-11-23 14:11:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30547 to 30543. [2021-11-23 14:11:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30543 states, 30541 states have (on average 1.8036410071706885) internal successors, (55085), 30542 states have internal predecessors, (55085), 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 14:11:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30543 states to 30543 states and 55085 transitions. [2021-11-23 14:11:38,239 INFO L78 Accepts]: Start accepts. Automaton has 30543 states and 55085 transitions. Word has length 234 [2021-11-23 14:11:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:11:38,239 INFO L470 AbstractCegarLoop]: Abstraction has 30543 states and 55085 transitions. [2021-11-23 14:11:38,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 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 14:11:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 30543 states and 55085 transitions. [2021-11-23 14:11:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-23 14:11:38,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:11:38,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:38,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 14:11:38,266 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:11:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:11:38,267 INFO L85 PathProgramCache]: Analyzing trace with hash -239554115, now seen corresponding path program 1 times [2021-11-23 14:11:38,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:11:38,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415636061] [2021-11-23 14:11:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:11:38,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:11:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:11:38,331 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 14:11:38,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:11:38,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415636061] [2021-11-23 14:11:38,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415636061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:11:38,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:11:38,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:11:38,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391132515] [2021-11-23 14:11:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:11:38,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:11:38,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:11:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:11:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:11:38,334 INFO L87 Difference]: Start difference. First operand 30543 states and 55085 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 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 14:11:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:11:40,649 INFO L93 Difference]: Finished difference Result 86624 states and 156225 transitions. [2021-11-23 14:11:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:11:40,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 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 237 [2021-11-23 14:11:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:11:40,735 INFO L225 Difference]: With dead ends: 86624 [2021-11-23 14:11:40,736 INFO L226 Difference]: Without dead ends: 58379 [2021-11-23 14:11:40,758 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 14:11:40,758 INFO L933 BasicCegarLoop]: 15970 mSDtfsCounter, 15879 mSDsluCounter, 13727 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15879 SdHoareTripleChecker+Valid, 29697 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:11:40,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15879 Valid, 29697 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:11:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58379 states.