./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0 --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 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:27:08,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:27:08,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:27:08,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:27:08,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:27:08,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:27:08,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:27:08,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:27:08,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:27:08,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:27:08,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:27:08,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:27:08,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:27:08,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:27:08,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:27:08,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:27:08,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:27:08,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:27:08,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:27:08,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:27:08,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:27:08,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:27:08,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:27:08,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:27:08,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:27:08,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:27:08,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:27:08,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:27:08,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:27:08,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:27:08,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:27:08,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:27:08,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:27:08,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:27:08,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:27:08,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:27:08,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:27:08,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:27:08,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:27:08,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:27:08,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:27:08,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:27:08,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:27:08,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:27:08,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:27:08,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:27:08,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:27:08,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:27:08,336 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:27:08,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:27:08,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:27:08,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:27:08,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:27:08,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:27:08,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:27:08,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:27:08,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:27:08,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:27:08,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:27:08,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:27:08,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:27:08,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:27:08,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:27:08,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:27:08,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:27:08,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:27:08,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:27:08,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:27:08,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:27:08,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:27:08,345 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:27:08,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:27:08,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:27:08,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:27:08,347 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_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 [2021-11-22 15:27:08,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:27:08,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:27:08,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:27:08,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:27:08,648 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:27:08,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2021-11-22 15:27:08,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/data/fbcfe9a02/6a721056e60940fc871edd28b1bc8ca2/FLAG18a26dd57 [2021-11-22 15:27:09,313 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:27:09,313 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2021-11-22 15:27:09,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/data/fbcfe9a02/6a721056e60940fc871edd28b1bc8ca2/FLAG18a26dd57 [2021-11-22 15:27:09,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/data/fbcfe9a02/6a721056e60940fc871edd28b1bc8ca2 [2021-11-22 15:27:09,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:27:09,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:27:09,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:27:09,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:27:09,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:27:09,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:27:09" (1/1) ... [2021-11-22 15:27:09,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571d87a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:09, skipping insertion in model container [2021-11-22 15:27:09,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:27:09" (1/1) ... [2021-11-22 15:27:09,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:27:09,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:27:09,997 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_6aaf1ad5-928b-472a-b6bd-09698034dde6/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2021-11-22 15:27:10,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:27:10,009 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:27:10,068 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_6aaf1ad5-928b-472a-b6bd-09698034dde6/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2021-11-22 15:27:10,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:27:10,086 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:27:10,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10 WrapperNode [2021-11-22 15:27:10,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:27:10,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:27:10,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:27:10,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:27:10,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,218 INFO L137 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 46, calls inlined = 89, statements flattened = 1607 [2021-11-22 15:27:10,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:27:10,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:27:10,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:27:10,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:27:10,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:27:10,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:27:10,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:27:10,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:27:10,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (1/1) ... [2021-11-22 15:27:10,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:27:10,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:10,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:27:10,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:27:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:27:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:27:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:27:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:27:10,519 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:27:10,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:27:11,765 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:27:11,795 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:27:11,796 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-22 15:27:11,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:27:11 BoogieIcfgContainer [2021-11-22 15:27:11,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:27:11,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:27:11,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:27:11,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:27:11,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:27:09" (1/3) ... [2021-11-22 15:27:11,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aef59aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:27:11, skipping insertion in model container [2021-11-22 15:27:11,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:10" (2/3) ... [2021-11-22 15:27:11,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aef59aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:27:11, skipping insertion in model container [2021-11-22 15:27:11,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:27:11" (3/3) ... [2021-11-22 15:27:11,815 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2021-11-22 15:27:11,821 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:27:11,821 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-11-22 15:27:11,876 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:27:11,884 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 [2021-11-22 15:27:11,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-11-22 15:27:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 534 states, 496 states have (on average 1.7762096774193548) internal successors, (881), 533 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:27:11,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:11,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:11,925 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash 595705480, now seen corresponding path program 1 times [2021-11-22 15:27:11,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:11,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669878793] [2021-11-22 15:27:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:11,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:12,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:12,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669878793] [2021-11-22 15:27:12,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669878793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:12,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:12,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:12,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643945021] [2021-11-22 15:27:12,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:12,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:12,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:12,253 INFO L87 Difference]: Start difference. First operand has 534 states, 496 states have (on average 1.7762096774193548) internal successors, (881), 533 states have internal predecessors, (881), 0 states have call successors, (0), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:12,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:12,651 INFO L93 Difference]: Finished difference Result 1284 states and 2099 transitions. [2021-11-22 15:27:12,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:12,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:27:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:12,681 INFO L225 Difference]: With dead ends: 1284 [2021-11-22 15:27:12,681 INFO L226 Difference]: Without dead ends: 752 [2021-11-22 15:27:12,687 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 [2021-11-22 15:27:12,691 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 489 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:12,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1498 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:27:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-22 15:27:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 470. [2021-11-22 15:27:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 439 states have (on average 1.6514806378132119) internal successors, (725), 469 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 725 transitions. [2021-11-22 15:27:12,778 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 725 transitions. Word has length 9 [2021-11-22 15:27:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:12,778 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 725 transitions. [2021-11-22 15:27:12,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 725 transitions. [2021-11-22 15:27:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 15:27:12,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:12,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:12,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:27:12,781 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash -503954138, now seen corresponding path program 1 times [2021-11-22 15:27:12,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:12,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054930519] [2021-11-22 15:27:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:12,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:12,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:12,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054930519] [2021-11-22 15:27:12,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054930519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:12,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:12,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:12,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257879601] [2021-11-22 15:27:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:12,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:12,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:12,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:12,848 INFO L87 Difference]: Start difference. First operand 470 states and 725 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:12,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:12,948 INFO L93 Difference]: Finished difference Result 1170 states and 1785 transitions. [2021-11-22 15:27:12,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:12,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-22 15:27:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:12,958 INFO L225 Difference]: With dead ends: 1170 [2021-11-22 15:27:12,958 INFO L226 Difference]: Without dead ends: 702 [2021-11-22 15:27:12,969 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 [2021-11-22 15:27:12,971 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 436 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:12,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1263 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-22 15:27:13,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 437. [2021-11-22 15:27:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 409 states have (on average 1.63080684596577) internal successors, (667), 436 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 667 transitions. [2021-11-22 15:27:13,009 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 667 transitions. Word has length 10 [2021-11-22 15:27:13,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:13,029 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 667 transitions. [2021-11-22 15:27:13,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 667 transitions. [2021-11-22 15:27:13,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:27:13,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:13,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:13,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:27:13,031 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash -248055967, now seen corresponding path program 1 times [2021-11-22 15:27:13,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:13,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839749532] [2021-11-22 15:27:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:13,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:13,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:13,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839749532] [2021-11-22 15:27:13,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839749532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:13,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:13,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:13,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056991717] [2021-11-22 15:27:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:13,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:13,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:13,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:13,084 INFO L87 Difference]: Start difference. First operand 437 states and 667 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:13,165 INFO L93 Difference]: Finished difference Result 1289 states and 1972 transitions. [2021-11-22 15:27:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:13,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-22 15:27:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:13,172 INFO L225 Difference]: With dead ends: 1289 [2021-11-22 15:27:13,172 INFO L226 Difference]: Without dead ends: 862 [2021-11-22 15:27:13,173 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 [2021-11-22 15:27:13,182 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 638 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:13,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 1286 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-22 15:27:13,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 441. [2021-11-22 15:27:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 413 states have (on average 1.6246973365617434) internal successors, (671), 440 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 671 transitions. [2021-11-22 15:27:13,216 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 671 transitions. Word has length 14 [2021-11-22 15:27:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:13,217 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 671 transitions. [2021-11-22 15:27:13,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 671 transitions. [2021-11-22 15:27:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 15:27:13,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:13,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:13,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:27:13,225 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:13,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:13,226 INFO L85 PathProgramCache]: Analyzing trace with hash -35486156, now seen corresponding path program 1 times [2021-11-22 15:27:13,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:13,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414278826] [2021-11-22 15:27:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:13,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:13,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:13,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414278826] [2021-11-22 15:27:13,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414278826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:13,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:13,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:13,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993236568] [2021-11-22 15:27:13,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:13,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:13,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:13,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:13,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:13,348 INFO L87 Difference]: Start difference. First operand 441 states and 671 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:13,435 INFO L93 Difference]: Finished difference Result 1644 states and 2472 transitions. [2021-11-22 15:27:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:27:13,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-22 15:27:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:13,444 INFO L225 Difference]: With dead ends: 1644 [2021-11-22 15:27:13,444 INFO L226 Difference]: Without dead ends: 1217 [2021-11-22 15:27:13,446 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 [2021-11-22 15:27:13,447 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 1526 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:13,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1928 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:13,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-22 15:27:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 443. [2021-11-22 15:27:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 415 states have (on average 1.621686746987952) internal successors, (673), 442 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 673 transitions. [2021-11-22 15:27:13,491 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 673 transitions. Word has length 18 [2021-11-22 15:27:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:13,491 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 673 transitions. [2021-11-22 15:27:13,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 673 transitions. [2021-11-22 15:27:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:27:13,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:13,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:13,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:27:13,493 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:13,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1707916525, now seen corresponding path program 1 times [2021-11-22 15:27:13,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:13,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429453926] [2021-11-22 15:27:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:13,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:13,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:13,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429453926] [2021-11-22 15:27:13,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429453926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:13,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:13,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:13,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645753870] [2021-11-22 15:27:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:13,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:13,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:13,561 INFO L87 Difference]: Start difference. First operand 443 states and 673 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:13,608 INFO L93 Difference]: Finished difference Result 699 states and 1052 transitions. [2021-11-22 15:27:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:27:13,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-22 15:27:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:13,612 INFO L225 Difference]: With dead ends: 699 [2021-11-22 15:27:13,612 INFO L226 Difference]: Without dead ends: 441 [2021-11-22 15:27:13,613 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 [2021-11-22 15:27:13,614 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 1 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:13,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1947 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-22 15:27:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2021-11-22 15:27:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 413 states have (on average 1.612590799031477) internal successors, (666), 440 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 666 transitions. [2021-11-22 15:27:13,632 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 666 transitions. Word has length 19 [2021-11-22 15:27:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:13,632 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 666 transitions. [2021-11-22 15:27:13,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 666 transitions. [2021-11-22 15:27:13,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 15:27:13,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:13,638 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] [2021-11-22 15:27:13,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:27:13,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1967275947, now seen corresponding path program 1 times [2021-11-22 15:27:13,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:13,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521197492] [2021-11-22 15:27:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:13,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:13,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:13,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521197492] [2021-11-22 15:27:13,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521197492] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:13,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586498806] [2021-11-22 15:27:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:13,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:13,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:13,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:13,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:27:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:13,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:27:13,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:13,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:27:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:14,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586498806] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:27:14,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:27:14,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-22 15:27:14,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891036153] [2021-11-22 15:27:14,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:27:14,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:27:14,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:27:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:27:14,035 INFO L87 Difference]: Start difference. First operand 441 states and 666 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:14,201 INFO L93 Difference]: Finished difference Result 1988 states and 3008 transitions. [2021-11-22 15:27:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:27:14,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 21 [2021-11-22 15:27:14,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:14,213 INFO L225 Difference]: With dead ends: 1988 [2021-11-22 15:27:14,214 INFO L226 Difference]: Without dead ends: 1558 [2021-11-22 15:27:14,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:27:14,220 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 2522 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2522 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:14,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2522 Valid, 2921 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-11-22 15:27:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 736. [2021-11-22 15:27:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 708 states have (on average 1.6511299435028248) internal successors, (1169), 735 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1169 transitions. [2021-11-22 15:27:14,264 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1169 transitions. Word has length 21 [2021-11-22 15:27:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:14,265 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1169 transitions. [2021-11-22 15:27:14,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1169 transitions. [2021-11-22 15:27:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 15:27:14,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:14,267 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:14,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:14,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:14,493 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2124869355, now seen corresponding path program 2 times [2021-11-22 15:27:14,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:14,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003143772] [2021-11-22 15:27:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:14,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 15:27:14,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003143772] [2021-11-22 15:27:14,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003143772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:14,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:14,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:14,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107145393] [2021-11-22 15:27:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:14,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:14,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:14,540 INFO L87 Difference]: Start difference. First operand 736 states and 1169 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:14,651 INFO L93 Difference]: Finished difference Result 1649 states and 2580 transitions. [2021-11-22 15:27:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 35 [2021-11-22 15:27:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:14,658 INFO L225 Difference]: With dead ends: 1649 [2021-11-22 15:27:14,658 INFO L226 Difference]: Without dead ends: 980 [2021-11-22 15:27:14,660 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 [2021-11-22 15:27:14,661 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 410 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:14,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 1374 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-11-22 15:27:14,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 649. [2021-11-22 15:27:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 626 states have (on average 1.595846645367412) internal successors, (999), 648 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 999 transitions. [2021-11-22 15:27:14,691 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 999 transitions. Word has length 35 [2021-11-22 15:27:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:14,692 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 999 transitions. [2021-11-22 15:27:14,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 999 transitions. [2021-11-22 15:27:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 15:27:14,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:14,695 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:14,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:27:14,696 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:14,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -227502305, now seen corresponding path program 1 times [2021-11-22 15:27:14,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:14,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061084156] [2021-11-22 15:27:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:14,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 15:27:14,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:14,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061084156] [2021-11-22 15:27:14,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061084156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:14,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:14,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:14,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59692043] [2021-11-22 15:27:14,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:14,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:14,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:14,779 INFO L87 Difference]: Start difference. First operand 649 states and 999 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:14,841 INFO L93 Difference]: Finished difference Result 1430 states and 2175 transitions. [2021-11-22 15:27:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:14,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 35 [2021-11-22 15:27:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:14,847 INFO L225 Difference]: With dead ends: 1430 [2021-11-22 15:27:14,847 INFO L226 Difference]: Without dead ends: 820 [2021-11-22 15:27:14,849 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 [2021-11-22 15:27:14,850 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 392 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:14,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1338 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:14,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-11-22 15:27:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 576. [2021-11-22 15:27:14,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 555 states have (on average 1.5495495495495495) internal successors, (860), 575 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 860 transitions. [2021-11-22 15:27:14,875 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 860 transitions. Word has length 35 [2021-11-22 15:27:14,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:14,877 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 860 transitions. [2021-11-22 15:27:14,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,878 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 860 transitions. [2021-11-22 15:27:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 15:27:14,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:14,881 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:14,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:27:14,882 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1528107588, now seen corresponding path program 1 times [2021-11-22 15:27:14,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:14,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203830057] [2021-11-22 15:27:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:14,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 15:27:14,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:14,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203830057] [2021-11-22 15:27:14,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203830057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:14,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:14,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:14,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421441211] [2021-11-22 15:27:14,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:14,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:14,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:14,962 INFO L87 Difference]: Start difference. First operand 576 states and 860 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,019 INFO L93 Difference]: Finished difference Result 1332 states and 1992 transitions. [2021-11-22 15:27:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:27:15,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 45 [2021-11-22 15:27:15,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,025 INFO L225 Difference]: With dead ends: 1332 [2021-11-22 15:27:15,025 INFO L226 Difference]: Without dead ends: 818 [2021-11-22 15:27:15,026 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 [2021-11-22 15:27:15,029 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 351 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1525 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-11-22 15:27:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 576. [2021-11-22 15:27:15,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 555 states have (on average 1.5441441441441441) internal successors, (857), 575 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 857 transitions. [2021-11-22 15:27:15,053 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 857 transitions. Word has length 45 [2021-11-22 15:27:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,054 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 857 transitions. [2021-11-22 15:27:15,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 857 transitions. [2021-11-22 15:27:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:27:15,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,055 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:27:15,056 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:15,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1026162927, now seen corresponding path program 1 times [2021-11-22 15:27:15,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182685654] [2021-11-22 15:27:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-22 15:27:15,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:15,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182685654] [2021-11-22 15:27:15,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182685654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:15,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:15,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:15,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423440446] [2021-11-22 15:27:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:15,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:15,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:15,106 INFO L87 Difference]: Start difference. First operand 576 states and 857 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,156 INFO L93 Difference]: Finished difference Result 1247 states and 1860 transitions. [2021-11-22 15:27:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:15,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 66 [2021-11-22 15:27:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,162 INFO L225 Difference]: With dead ends: 1247 [2021-11-22 15:27:15,162 INFO L226 Difference]: Without dead ends: 752 [2021-11-22 15:27:15,163 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 [2021-11-22 15:27:15,164 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 410 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 1241 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-22 15:27:15,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 511. [2021-11-22 15:27:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 491 states have (on average 1.5213849287169043) internal successors, (747), 510 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 747 transitions. [2021-11-22 15:27:15,186 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 747 transitions. Word has length 66 [2021-11-22 15:27:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,186 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 747 transitions. [2021-11-22 15:27:15,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 747 transitions. [2021-11-22 15:27:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:27:15,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:27:15,188 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash -135597154, now seen corresponding path program 1 times [2021-11-22 15:27:15,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622812454] [2021-11-22 15:27:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-22 15:27:15,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:15,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622812454] [2021-11-22 15:27:15,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622812454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:15,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:15,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:15,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78072011] [2021-11-22 15:27:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:15,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:15,235 INFO L87 Difference]: Start difference. First operand 511 states and 747 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,295 INFO L93 Difference]: Finished difference Result 1048 states and 1525 transitions. [2021-11-22 15:27:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:15,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 67 [2021-11-22 15:27:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,300 INFO L225 Difference]: With dead ends: 1048 [2021-11-22 15:27:15,300 INFO L226 Difference]: Without dead ends: 610 [2021-11-22 15:27:15,301 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 [2021-11-22 15:27:15,302 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 331 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 913 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-22 15:27:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 455. [2021-11-22 15:27:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 439 states have (on average 1.4373576309794989) internal successors, (631), 454 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 631 transitions. [2021-11-22 15:27:15,321 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 631 transitions. Word has length 67 [2021-11-22 15:27:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,322 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 631 transitions. [2021-11-22 15:27:15,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 631 transitions. [2021-11-22 15:27:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 15:27:15,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,323 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:27:15,324 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,325 INFO L85 PathProgramCache]: Analyzing trace with hash 274359631, now seen corresponding path program 1 times [2021-11-22 15:27:15,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799326774] [2021-11-22 15:27:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-22 15:27:15,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:15,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799326774] [2021-11-22 15:27:15,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799326774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:15,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:15,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:15,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192010762] [2021-11-22 15:27:15,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:15,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:15,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:15,378 INFO L87 Difference]: Start difference. First operand 455 states and 631 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,423 INFO L93 Difference]: Finished difference Result 1032 states and 1455 transitions. [2021-11-22 15:27:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:27:15,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 15:27:15,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,428 INFO L225 Difference]: With dead ends: 1032 [2021-11-22 15:27:15,428 INFO L226 Difference]: Without dead ends: 679 [2021-11-22 15:27:15,429 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 [2021-11-22 15:27:15,430 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 320 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 1243 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-22 15:27:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 455. [2021-11-22 15:27:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 439 states have (on average 1.430523917995444) internal successors, (628), 454 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 628 transitions. [2021-11-22 15:27:15,450 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 628 transitions. Word has length 78 [2021-11-22 15:27:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,450 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 628 transitions. [2021-11-22 15:27:15,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 628 transitions. [2021-11-22 15:27:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 15:27:15,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:27:15,452 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1726325344, now seen corresponding path program 1 times [2021-11-22 15:27:15,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739130902] [2021-11-22 15:27:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-22 15:27:15,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:15,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739130902] [2021-11-22 15:27:15,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739130902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:15,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:15,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:15,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694688310] [2021-11-22 15:27:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:15,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:15,509 INFO L87 Difference]: Start difference. First operand 455 states and 628 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,558 INFO L93 Difference]: Finished difference Result 904 states and 1286 transitions. [2021-11-22 15:27:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:15,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-22 15:27:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,563 INFO L225 Difference]: With dead ends: 904 [2021-11-22 15:27:15,563 INFO L226 Difference]: Without dead ends: 591 [2021-11-22 15:27:15,564 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 [2021-11-22 15:27:15,565 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 311 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 798 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-22 15:27:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 411. [2021-11-22 15:27:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 405 states have (on average 1.4074074074074074) internal successors, (570), 410 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 570 transitions. [2021-11-22 15:27:15,586 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 570 transitions. Word has length 103 [2021-11-22 15:27:15,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,586 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 570 transitions. [2021-11-22 15:27:15,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 570 transitions. [2021-11-22 15:27:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 15:27:15,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,594 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:27:15,595 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1846233333, now seen corresponding path program 1 times [2021-11-22 15:27:15,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544614842] [2021-11-22 15:27:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-22 15:27:15,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:15,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544614842] [2021-11-22 15:27:15,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544614842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:15,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:15,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:15,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822230022] [2021-11-22 15:27:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:15,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:15,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:15,647 INFO L87 Difference]: Start difference. First operand 411 states and 570 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2021-11-22 15:27:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,677 INFO L93 Difference]: Finished difference Result 624 states and 884 transitions. [2021-11-22 15:27:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:15,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 112 [2021-11-22 15:27:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,681 INFO L225 Difference]: With dead ends: 624 [2021-11-22 15:27:15,681 INFO L226 Difference]: Without dead ends: 327 [2021-11-22 15:27:15,682 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 [2021-11-22 15:27:15,683 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 289 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 376 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-22 15:27:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-11-22 15:27:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 321 states have (on average 1.3831775700934579) internal successors, (444), 326 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 444 transitions. [2021-11-22 15:27:15,698 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 444 transitions. Word has length 112 [2021-11-22 15:27:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,698 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 444 transitions. [2021-11-22 15:27:15,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2021-11-22 15:27:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 444 transitions. [2021-11-22 15:27:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 15:27:15,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:27:15,702 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1519105475, now seen corresponding path program 1 times [2021-11-22 15:27:15,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001700782] [2021-11-22 15:27:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-22 15:27:15,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:15,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001700782] [2021-11-22 15:27:15,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001700782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:15,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:15,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:15,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812874036] [2021-11-22 15:27:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:15,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:15,767 INFO L87 Difference]: Start difference. First operand 327 states and 444 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,800 INFO L93 Difference]: Finished difference Result 515 states and 718 transitions. [2021-11-22 15:27:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:27:15,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 115 [2021-11-22 15:27:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,803 INFO L225 Difference]: With dead ends: 515 [2021-11-22 15:27:15,804 INFO L226 Difference]: Without dead ends: 327 [2021-11-22 15:27:15,806 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 [2021-11-22 15:27:15,807 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1003 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-22 15:27:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-11-22 15:27:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 321 states have (on average 1.3738317757009346) internal successors, (441), 326 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 441 transitions. [2021-11-22 15:27:15,822 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 441 transitions. Word has length 115 [2021-11-22 15:27:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,823 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 441 transitions. [2021-11-22 15:27:15,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 441 transitions. [2021-11-22 15:27:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-22 15:27:15,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,825 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:27:15,825 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1095463800, now seen corresponding path program 1 times [2021-11-22 15:27:15,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91353226] [2021-11-22 15:27:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:15,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:15,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91353226] [2021-11-22 15:27:15,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91353226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:15,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:15,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:15,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747249890] [2021-11-22 15:27:15,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:15,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:15,893 INFO L87 Difference]: Start difference. First operand 327 states and 441 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,924 INFO L93 Difference]: Finished difference Result 653 states and 923 transitions. [2021-11-22 15:27:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:15,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 138 [2021-11-22 15:27:15,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,928 INFO L225 Difference]: With dead ends: 653 [2021-11-22 15:27:15,928 INFO L226 Difference]: Without dead ends: 470 [2021-11-22 15:27:15,929 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 [2021-11-22 15:27:15,929 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 237 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 627 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-22 15:27:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 321. [2021-11-22 15:27:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 316 states have (on average 1.3670886075949367) internal successors, (432), 320 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 432 transitions. [2021-11-22 15:27:15,946 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 432 transitions. Word has length 138 [2021-11-22 15:27:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,947 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 432 transitions. [2021-11-22 15:27:15,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 432 transitions. [2021-11-22 15:27:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 15:27:15,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,949 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:27:15,950 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash 828503840, now seen corresponding path program 1 times [2021-11-22 15:27:15,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241660278] [2021-11-22 15:27:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:16,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:16,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241660278] [2021-11-22 15:27:16,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241660278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:16,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:16,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:16,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342548004] [2021-11-22 15:27:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:16,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:16,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:16,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:16,030 INFO L87 Difference]: Start difference. First operand 321 states and 432 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:16,058 INFO L93 Difference]: Finished difference Result 629 states and 889 transitions. [2021-11-22 15:27:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 144 [2021-11-22 15:27:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:16,062 INFO L225 Difference]: With dead ends: 629 [2021-11-22 15:27:16,062 INFO L226 Difference]: Without dead ends: 452 [2021-11-22 15:27:16,063 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 [2021-11-22 15:27:16,064 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 220 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:16,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 816 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-22 15:27:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 316. [2021-11-22 15:27:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 312 states have (on average 1.358974358974359) internal successors, (424), 315 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 424 transitions. [2021-11-22 15:27:16,080 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 424 transitions. Word has length 144 [2021-11-22 15:27:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:16,080 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 424 transitions. [2021-11-22 15:27:16,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 424 transitions. [2021-11-22 15:27:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-22 15:27:16,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:16,083 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:16,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:27:16,083 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:16,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:16,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2036828493, now seen corresponding path program 1 times [2021-11-22 15:27:16,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:16,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322139701] [2021-11-22 15:27:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:16,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:16,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:16,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322139701] [2021-11-22 15:27:16,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322139701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:16,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:16,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:16,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030035394] [2021-11-22 15:27:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:16,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:16,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:16,158 INFO L87 Difference]: Start difference. First operand 316 states and 424 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:16,180 INFO L93 Difference]: Finished difference Result 485 states and 673 transitions. [2021-11-22 15:27:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:16,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-22 15:27:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:16,183 INFO L225 Difference]: With dead ends: 485 [2021-11-22 15:27:16,183 INFO L226 Difference]: Without dead ends: 313 [2021-11-22 15:27:16,183 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 [2021-11-22 15:27:16,184 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 203 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:16,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 417 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-22 15:27:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2021-11-22 15:27:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 309 states have (on average 1.3495145631067962) internal successors, (417), 311 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 417 transitions. [2021-11-22 15:27:16,199 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 417 transitions. Word has length 151 [2021-11-22 15:27:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:16,200 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 417 transitions. [2021-11-22 15:27:16,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 417 transitions. [2021-11-22 15:27:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-22 15:27:16,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:16,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:16,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:27:16,203 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash -214988744, now seen corresponding path program 1 times [2021-11-22 15:27:16,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:16,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090317066] [2021-11-22 15:27:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:16,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:16,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:16,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090317066] [2021-11-22 15:27:16,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090317066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:16,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:16,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:16,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120307740] [2021-11-22 15:27:16,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:16,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:16,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:16,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:16,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:16,269 INFO L87 Difference]: Start difference. First operand 312 states and 417 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:16,285 INFO L93 Difference]: Finished difference Result 535 states and 740 transitions. [2021-11-22 15:27:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-22 15:27:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:16,289 INFO L225 Difference]: With dead ends: 535 [2021-11-22 15:27:16,289 INFO L226 Difference]: Without dead ends: 367 [2021-11-22 15:27:16,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:16,291 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 239 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:16,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 542 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:16,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-22 15:27:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 308. [2021-11-22 15:27:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 306 states have (on average 1.34640522875817) internal successors, (412), 307 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 412 transitions. [2021-11-22 15:27:16,308 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 412 transitions. Word has length 159 [2021-11-22 15:27:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:16,309 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 412 transitions. [2021-11-22 15:27:16,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 412 transitions. [2021-11-22 15:27:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-22 15:27:16,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:16,311 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:16,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:27:16,312 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2051513272, now seen corresponding path program 1 times [2021-11-22 15:27:16,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:16,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888129170] [2021-11-22 15:27:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:16,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:16,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:16,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888129170] [2021-11-22 15:27:16,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888129170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:16,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:16,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:16,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627792380] [2021-11-22 15:27:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:16,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:16,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:16,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:16,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:16,445 INFO L87 Difference]: Start difference. First operand 308 states and 412 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:16,553 INFO L93 Difference]: Finished difference Result 668 states and 929 transitions. [2021-11-22 15:27:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:27:16,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 162 [2021-11-22 15:27:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:16,557 INFO L225 Difference]: With dead ends: 668 [2021-11-22 15:27:16,558 INFO L226 Difference]: Without dead ends: 504 [2021-11-22 15:27:16,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:16,559 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 347 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:16,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 845 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-11-22 15:27:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 401. [2021-11-22 15:27:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 399 states have (on average 1.355889724310777) internal successors, (541), 400 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 541 transitions. [2021-11-22 15:27:16,587 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 541 transitions. Word has length 162 [2021-11-22 15:27:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:16,588 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 541 transitions. [2021-11-22 15:27:16,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 541 transitions. [2021-11-22 15:27:16,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-22 15:27:16,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:16,590 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:16,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:27:16,591 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:16,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:16,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1002859798, now seen corresponding path program 1 times [2021-11-22 15:27:16,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:16,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495257327] [2021-11-22 15:27:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:16,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:16,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:16,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495257327] [2021-11-22 15:27:16,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495257327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:16,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:16,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:16,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293052678] [2021-11-22 15:27:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:16,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:16,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:16,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:16,677 INFO L87 Difference]: Start difference. First operand 401 states and 541 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:16,722 INFO L93 Difference]: Finished difference Result 837 states and 1172 transitions. [2021-11-22 15:27:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:16,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2021-11-22 15:27:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:16,726 INFO L225 Difference]: With dead ends: 837 [2021-11-22 15:27:16,727 INFO L226 Difference]: Without dead ends: 627 [2021-11-22 15:27:16,727 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 [2021-11-22 15:27:16,728 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 199 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:16,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 607 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-22 15:27:16,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 486. [2021-11-22 15:27:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 484 states have (on average 1.353305785123967) internal successors, (655), 485 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 655 transitions. [2021-11-22 15:27:16,773 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 655 transitions. Word has length 181 [2021-11-22 15:27:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:16,774 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 655 transitions. [2021-11-22 15:27:16,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 655 transitions. [2021-11-22 15:27:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-22 15:27:16,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:16,777 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:16,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:27:16,778 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 706391251, now seen corresponding path program 1 times [2021-11-22 15:27:16,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:16,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972807069] [2021-11-22 15:27:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:16,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:16,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:16,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972807069] [2021-11-22 15:27:16,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972807069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:16,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:16,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:16,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027955863] [2021-11-22 15:27:16,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:16,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:16,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:16,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:16,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:16,859 INFO L87 Difference]: Start difference. First operand 486 states and 655 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:16,914 INFO L93 Difference]: Finished difference Result 1016 states and 1415 transitions. [2021-11-22 15:27:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:16,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 182 [2021-11-22 15:27:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:16,920 INFO L225 Difference]: With dead ends: 1016 [2021-11-22 15:27:16,920 INFO L226 Difference]: Without dead ends: 754 [2021-11-22 15:27:16,922 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 [2021-11-22 15:27:16,923 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 204 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:16,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 628 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-22 15:27:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 598. [2021-11-22 15:27:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 596 states have (on average 1.354026845637584) internal successors, (807), 597 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 807 transitions. [2021-11-22 15:27:16,967 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 807 transitions. Word has length 182 [2021-11-22 15:27:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:16,967 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 807 transitions. [2021-11-22 15:27:16,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 807 transitions. [2021-11-22 15:27:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-22 15:27:16,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:16,971 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:16,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:27:16,971 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:16,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1494545967, now seen corresponding path program 1 times [2021-11-22 15:27:16,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:16,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003734049] [2021-11-22 15:27:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:16,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:17,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:17,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003734049] [2021-11-22 15:27:17,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003734049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:17,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:17,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:17,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680772180] [2021-11-22 15:27:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:17,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:17,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:17,081 INFO L87 Difference]: Start difference. First operand 598 states and 807 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:17,145 INFO L93 Difference]: Finished difference Result 1222 states and 1703 transitions. [2021-11-22 15:27:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:17,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 183 [2021-11-22 15:27:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:17,150 INFO L225 Difference]: With dead ends: 1222 [2021-11-22 15:27:17,151 INFO L226 Difference]: Without dead ends: 884 [2021-11-22 15:27:17,152 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 [2021-11-22 15:27:17,153 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 210 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:17,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 650 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-11-22 15:27:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 696. [2021-11-22 15:27:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 694 states have (on average 1.3645533141210375) internal successors, (947), 695 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 947 transitions. [2021-11-22 15:27:17,203 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 947 transitions. Word has length 183 [2021-11-22 15:27:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:17,203 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 947 transitions. [2021-11-22 15:27:17,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 947 transitions. [2021-11-22 15:27:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-22 15:27:17,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:17,207 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:17,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:27:17,207 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1275691249, now seen corresponding path program 1 times [2021-11-22 15:27:17,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003637483] [2021-11-22 15:27:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:17,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-22 15:27:17,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:17,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003637483] [2021-11-22 15:27:17,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003637483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:17,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106044671] [2021-11-22 15:27:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:17,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:17,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:17,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:17,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:27:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:17,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:27:17,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:17,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:27:17,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106044671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:17,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:27:17,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 15:27:17,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845276058] [2021-11-22 15:27:17,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:17,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:17,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:17,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:17,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:17,820 INFO L87 Difference]: Start difference. First operand 696 states and 947 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:17,917 INFO L93 Difference]: Finished difference Result 1401 states and 1892 transitions. [2021-11-22 15:27:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:17,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 183 [2021-11-22 15:27:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:17,924 INFO L225 Difference]: With dead ends: 1401 [2021-11-22 15:27:17,924 INFO L226 Difference]: Without dead ends: 973 [2021-11-22 15:27:17,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:17,926 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 274 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:17,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 540 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-11-22 15:27:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 696. [2021-11-22 15:27:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 694 states have (on average 1.3515850144092219) internal successors, (938), 695 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 938 transitions. [2021-11-22 15:27:17,979 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 938 transitions. Word has length 183 [2021-11-22 15:27:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:17,979 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 938 transitions. [2021-11-22 15:27:17,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 938 transitions. [2021-11-22 15:27:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-22 15:27:17,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:17,983 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:18,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:18,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-22 15:27:18,209 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1079536331, now seen corresponding path program 1 times [2021-11-22 15:27:18,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:18,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591305] [2021-11-22 15:27:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:18,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-22 15:27:18,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:18,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591305] [2021-11-22 15:27:18,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:18,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100452797] [2021-11-22 15:27:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:18,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:18,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:18,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:18,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:27:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:18,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:27:18,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:18,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:27:18,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100452797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:18,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:27:18,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 15:27:18,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806780679] [2021-11-22 15:27:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:18,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:18,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:18,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:18,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:18,760 INFO L87 Difference]: Start difference. First operand 696 states and 938 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:18,887 INFO L93 Difference]: Finished difference Result 1664 states and 2275 transitions. [2021-11-22 15:27:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:18,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-22 15:27:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:18,895 INFO L225 Difference]: With dead ends: 1664 [2021-11-22 15:27:18,895 INFO L226 Difference]: Without dead ends: 1236 [2021-11-22 15:27:18,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:18,897 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 197 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:18,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 751 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:18,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-11-22 15:27:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 696. [2021-11-22 15:27:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 694 states have (on average 1.3501440922190202) internal successors, (937), 695 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 937 transitions. [2021-11-22 15:27:18,954 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 937 transitions. Word has length 184 [2021-11-22 15:27:18,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:18,955 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 937 transitions. [2021-11-22 15:27:18,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:18,955 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 937 transitions. [2021-11-22 15:27:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-22 15:27:18,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:18,958 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:18,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:19,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:19,185 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:19,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1099572441, now seen corresponding path program 1 times [2021-11-22 15:27:19,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:19,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515705988] [2021-11-22 15:27:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:19,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:19,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:19,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515705988] [2021-11-22 15:27:19,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515705988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:19,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:19,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:19,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105243713] [2021-11-22 15:27:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:19,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:19,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:19,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:19,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:19,305 INFO L87 Difference]: Start difference. First operand 696 states and 937 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:19,418 INFO L93 Difference]: Finished difference Result 1158 states and 1577 transitions. [2021-11-22 15:27:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:27:19,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 185 [2021-11-22 15:27:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:19,426 INFO L225 Difference]: With dead ends: 1158 [2021-11-22 15:27:19,426 INFO L226 Difference]: Without dead ends: 1156 [2021-11-22 15:27:19,427 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 [2021-11-22 15:27:19,428 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 315 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:19,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1228 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-22 15:27:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 698. [2021-11-22 15:27:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 696 states have (on average 1.3491379310344827) internal successors, (939), 697 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 939 transitions. [2021-11-22 15:27:19,497 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 939 transitions. Word has length 185 [2021-11-22 15:27:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:19,497 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 939 transitions. [2021-11-22 15:27:19,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 939 transitions. [2021-11-22 15:27:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 15:27:19,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:19,501 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:19,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:27:19,501 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1552593023, now seen corresponding path program 1 times [2021-11-22 15:27:19,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:19,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519544010] [2021-11-22 15:27:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:19,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-22 15:27:19,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:19,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519544010] [2021-11-22 15:27:19,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519544010] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:19,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657892741] [2021-11-22 15:27:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:19,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:19,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:19,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:19,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:27:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:19,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:27:19,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-22 15:27:20,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:27:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-22 15:27:20,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657892741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:27:20,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:27:20,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2021-11-22 15:27:20,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812238715] [2021-11-22 15:27:20,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:27:20,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:27:20,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:27:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:27:20,603 INFO L87 Difference]: Start difference. First operand 698 states and 939 transitions. Second operand has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:21,419 INFO L93 Difference]: Finished difference Result 4302 states and 5963 transitions. [2021-11-22 15:27:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 15:27:21,420 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 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 188 [2021-11-22 15:27:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:21,442 INFO L225 Difference]: With dead ends: 4302 [2021-11-22 15:27:21,442 INFO L226 Difference]: Without dead ends: 3872 [2021-11-22 15:27:21,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2021-11-22 15:27:21,445 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 4501 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 3421 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:21,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4501 Valid, 3421 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:27:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-11-22 15:27:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 946. [2021-11-22 15:27:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 944 states have (on average 1.3252118644067796) internal successors, (1251), 945 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1251 transitions. [2021-11-22 15:27:21,545 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1251 transitions. Word has length 188 [2021-11-22 15:27:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:21,546 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1251 transitions. [2021-11-22 15:27:21,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1251 transitions. [2021-11-22 15:27:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 15:27:21,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:21,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:21,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:21,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-22 15:27:21,765 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:21,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:21,765 INFO L85 PathProgramCache]: Analyzing trace with hash 272729345, now seen corresponding path program 1 times [2021-11-22 15:27:21,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:21,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088372567] [2021-11-22 15:27:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:21,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:21,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:21,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088372567] [2021-11-22 15:27:21,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088372567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:21,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:21,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:21,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974599018] [2021-11-22 15:27:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:21,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:21,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:21,832 INFO L87 Difference]: Start difference. First operand 946 states and 1251 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:22,014 INFO L93 Difference]: Finished difference Result 2138 states and 2864 transitions. [2021-11-22 15:27:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:22,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 188 [2021-11-22 15:27:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:22,024 INFO L225 Difference]: With dead ends: 2138 [2021-11-22 15:27:22,024 INFO L226 Difference]: Without dead ends: 1708 [2021-11-22 15:27:22,026 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 [2021-11-22 15:27:22,026 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 195 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:22,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 751 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:22,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-11-22 15:27:22,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 946. [2021-11-22 15:27:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 944 states have (on average 1.3230932203389831) internal successors, (1249), 945 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1249 transitions. [2021-11-22 15:27:22,106 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1249 transitions. Word has length 188 [2021-11-22 15:27:22,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:22,106 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1249 transitions. [2021-11-22 15:27:22,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:22,106 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1249 transitions. [2021-11-22 15:27:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-22 15:27:22,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:22,110 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:22,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:27:22,110 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash -110997277, now seen corresponding path program 1 times [2021-11-22 15:27:22,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:22,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463208866] [2021-11-22 15:27:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:22,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:27:22,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463208866] [2021-11-22 15:27:22,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463208866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:22,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:22,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:22,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531743869] [2021-11-22 15:27:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:22,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:22,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:22,157 INFO L87 Difference]: Start difference. First operand 946 states and 1249 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:22,260 INFO L93 Difference]: Finished difference Result 1599 states and 2125 transitions. [2021-11-22 15:27:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:22,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-11-22 15:27:22,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:22,266 INFO L225 Difference]: With dead ends: 1599 [2021-11-22 15:27:22,266 INFO L226 Difference]: Without dead ends: 774 [2021-11-22 15:27:22,267 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 [2021-11-22 15:27:22,268 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 209 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:22,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 329 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-22 15:27:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 773. [2021-11-22 15:27:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 771 states have (on average 1.2996108949416343) internal successors, (1002), 772 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1002 transitions. [2021-11-22 15:27:22,332 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1002 transitions. Word has length 191 [2021-11-22 15:27:22,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:22,332 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 1002 transitions. [2021-11-22 15:27:22,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1002 transitions. [2021-11-22 15:27:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-22 15:27:22,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:22,336 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:22,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:27:22,336 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1583548293, now seen corresponding path program 1 times [2021-11-22 15:27:22,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:22,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760755082] [2021-11-22 15:27:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:22,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:22,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:22,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760755082] [2021-11-22 15:27:22,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760755082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:22,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:22,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:27:22,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081716111] [2021-11-22 15:27:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:22,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:27:22,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:27:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:27:22,490 INFO L87 Difference]: Start difference. First operand 773 states and 1002 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:23,786 INFO L93 Difference]: Finished difference Result 2822 states and 3709 transitions. [2021-11-22 15:27:23,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-22 15:27:23,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 196 [2021-11-22 15:27:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:23,808 INFO L225 Difference]: With dead ends: 2822 [2021-11-22 15:27:23,815 INFO L226 Difference]: Without dead ends: 2403 [2021-11-22 15:27:23,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=1256, Unknown=0, NotChecked=0, Total=1640 [2021-11-22 15:27:23,818 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 1813 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:23,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1813 Valid, 3357 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:27:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-11-22 15:27:23,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 892. [2021-11-22 15:27:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 890 states have (on average 1.2921348314606742) internal successors, (1150), 891 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1150 transitions. [2021-11-22 15:27:23,952 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1150 transitions. Word has length 196 [2021-11-22 15:27:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:23,952 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1150 transitions. [2021-11-22 15:27:23,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1150 transitions. [2021-11-22 15:27:23,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-22 15:27:23,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:23,956 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:23,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:27:23,957 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:23,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1397987839, now seen corresponding path program 1 times [2021-11-22 15:27:23,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:23,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886512728] [2021-11-22 15:27:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:23,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:24,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:24,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886512728] [2021-11-22 15:27:24,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886512728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:24,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:24,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:27:24,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593539316] [2021-11-22 15:27:24,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:24,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:27:24,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:27:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:27:24,095 INFO L87 Difference]: Start difference. First operand 892 states and 1150 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:24,379 INFO L93 Difference]: Finished difference Result 2986 states and 3957 transitions. [2021-11-22 15:27:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:27:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 202 [2021-11-22 15:27:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:24,386 INFO L225 Difference]: With dead ends: 2986 [2021-11-22 15:27:24,386 INFO L226 Difference]: Without dead ends: 2442 [2021-11-22 15:27:24,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:27:24,389 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 738 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:24,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2133 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-11-22 15:27:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 969. [2021-11-22 15:27:24,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.2905894519131333) internal successors, (1248), 968 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1248 transitions. [2021-11-22 15:27:24,490 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1248 transitions. Word has length 202 [2021-11-22 15:27:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:24,491 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1248 transitions. [2021-11-22 15:27:24,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1248 transitions. [2021-11-22 15:27:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-22 15:27:24,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:24,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:24,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:27:24,512 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2138656577, now seen corresponding path program 1 times [2021-11-22 15:27:24,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:24,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212988899] [2021-11-22 15:27:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:24,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:24,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:24,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212988899] [2021-11-22 15:27:24,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212988899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:24,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:24,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:27:24,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384874377] [2021-11-22 15:27:24,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:24,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:27:24,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:24,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:27:24,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:27:24,705 INFO L87 Difference]: Start difference. First operand 969 states and 1248 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:25,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:25,748 INFO L93 Difference]: Finished difference Result 3223 states and 4158 transitions. [2021-11-22 15:27:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-22 15:27:25,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 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 202 [2021-11-22 15:27:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:25,755 INFO L225 Difference]: With dead ends: 3223 [2021-11-22 15:27:25,755 INFO L226 Difference]: Without dead ends: 2615 [2021-11-22 15:27:25,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-11-22 15:27:25,759 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1930 mSDsluCounter, 3955 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:25,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1930 Valid, 4543 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:27:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-11-22 15:27:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1248. [2021-11-22 15:27:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1246 states have (on average 1.2664526484751204) internal successors, (1578), 1247 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1578 transitions. [2021-11-22 15:27:25,915 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1578 transitions. Word has length 202 [2021-11-22 15:27:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:25,916 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1578 transitions. [2021-11-22 15:27:25,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1578 transitions. [2021-11-22 15:27:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-22 15:27:25,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:25,920 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:25,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:27:25,920 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1077984063, now seen corresponding path program 1 times [2021-11-22 15:27:25,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:25,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102354062] [2021-11-22 15:27:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:25,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:26,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:26,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102354062] [2021-11-22 15:27:26,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102354062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:26,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:26,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:26,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69982462] [2021-11-22 15:27:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:26,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:26,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:26,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:26,059 INFO L87 Difference]: Start difference. First operand 1248 states and 1578 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:26,219 INFO L93 Difference]: Finished difference Result 2197 states and 2793 transitions. [2021-11-22 15:27:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:27:26,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 202 [2021-11-22 15:27:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:26,223 INFO L225 Difference]: With dead ends: 2197 [2021-11-22 15:27:26,223 INFO L226 Difference]: Without dead ends: 1192 [2021-11-22 15:27:26,225 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 [2021-11-22 15:27:26,225 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:26,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 808 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-11-22 15:27:26,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2021-11-22 15:27:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 1190 states have (on average 1.2529411764705882) internal successors, (1491), 1191 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:26,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1491 transitions. [2021-11-22 15:27:26,353 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1491 transitions. Word has length 202 [2021-11-22 15:27:26,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:26,354 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1491 transitions. [2021-11-22 15:27:26,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:26,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1491 transitions. [2021-11-22 15:27:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-22 15:27:26,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:26,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:26,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 15:27:26,358 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:26,359 INFO L85 PathProgramCache]: Analyzing trace with hash 627934067, now seen corresponding path program 1 times [2021-11-22 15:27:26,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:26,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122792693] [2021-11-22 15:27:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:26,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:26,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:26,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122792693] [2021-11-22 15:27:26,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122792693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:26,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:26,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 15:27:26,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386718668] [2021-11-22 15:27:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:26,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:27:26,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:27:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:27:26,594 INFO L87 Difference]: Start difference. First operand 1192 states and 1491 transitions. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:27,403 INFO L93 Difference]: Finished difference Result 3017 states and 3825 transitions. [2021-11-22 15:27:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:27:27,404 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 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 204 [2021-11-22 15:27:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:27,408 INFO L225 Difference]: With dead ends: 3017 [2021-11-22 15:27:27,409 INFO L226 Difference]: Without dead ends: 2155 [2021-11-22 15:27:27,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-22 15:27:27,411 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 965 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:27,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 3903 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:27:27,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2021-11-22 15:27:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1180. [2021-11-22 15:27:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1178 states have (on average 1.2529711375212225) internal successors, (1476), 1179 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1476 transitions. [2021-11-22 15:27:27,571 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1476 transitions. Word has length 204 [2021-11-22 15:27:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:27,572 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 1476 transitions. [2021-11-22 15:27:27,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1476 transitions. [2021-11-22 15:27:27,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-22 15:27:27,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:27,576 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:27,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 15:27:27,576 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1718375969, now seen corresponding path program 1 times [2021-11-22 15:27:27,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:27,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667795887] [2021-11-22 15:27:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:27,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-22 15:27:27,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:27,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667795887] [2021-11-22 15:27:27,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667795887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:27,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:27,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:27,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86001887] [2021-11-22 15:27:27,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:27,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:27,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:27,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:27,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:27,652 INFO L87 Difference]: Start difference. First operand 1180 states and 1476 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:27,894 INFO L93 Difference]: Finished difference Result 2230 states and 2821 transitions. [2021-11-22 15:27:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:27:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 217 [2021-11-22 15:27:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:27,898 INFO L225 Difference]: With dead ends: 2230 [2021-11-22 15:27:27,898 INFO L226 Difference]: Without dead ends: 1379 [2021-11-22 15:27:27,900 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 [2021-11-22 15:27:27,900 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 560 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:27,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 1035 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2021-11-22 15:27:27,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 937. [2021-11-22 15:27:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.2403846153846154) internal successors, (1161), 936 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1161 transitions. [2021-11-22 15:27:28,002 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1161 transitions. Word has length 217 [2021-11-22 15:27:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:28,003 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1161 transitions. [2021-11-22 15:27:28,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1161 transitions. [2021-11-22 15:27:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-22 15:27:28,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:28,019 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:28,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 15:27:28,020 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1720433140, now seen corresponding path program 1 times [2021-11-22 15:27:28,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:28,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756605332] [2021-11-22 15:27:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:28,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:28,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:28,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756605332] [2021-11-22 15:27:28,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756605332] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:28,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618308706] [2021-11-22 15:27:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:28,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:28,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:28,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:28,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:27:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:28,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 15:27:28,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-22 15:27:28,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:27:28,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618308706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:28,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:27:28,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2021-11-22 15:27:28,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113980106] [2021-11-22 15:27:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:28,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:27:28,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:27:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:27:29,000 INFO L87 Difference]: Start difference. First operand 937 states and 1161 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:29,725 INFO L93 Difference]: Finished difference Result 2611 states and 3255 transitions. [2021-11-22 15:27:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:27:29,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 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 245 [2021-11-22 15:27:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:29,730 INFO L225 Difference]: With dead ends: 2611 [2021-11-22 15:27:29,731 INFO L226 Difference]: Without dead ends: 2022 [2021-11-22 15:27:29,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-11-22 15:27:29,734 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 605 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:29,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 2613 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:29,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2021-11-22 15:27:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 960. [2021-11-22 15:27:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 1.2419186652763294) internal successors, (1191), 959 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1191 transitions. [2021-11-22 15:27:29,882 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1191 transitions. Word has length 245 [2021-11-22 15:27:29,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:29,883 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1191 transitions. [2021-11-22 15:27:29,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:29,884 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1191 transitions. [2021-11-22 15:27:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-22 15:27:29,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:29,888 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:29,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:30,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-22 15:27:30,105 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:30,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1663174838, now seen corresponding path program 1 times [2021-11-22 15:27:30,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:30,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765009300] [2021-11-22 15:27:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:30,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-22 15:27:30,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:30,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765009300] [2021-11-22 15:27:30,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765009300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:30,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:30,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:30,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776154162] [2021-11-22 15:27:30,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:30,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:30,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:30,199 INFO L87 Difference]: Start difference. First operand 960 states and 1191 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:30,366 INFO L93 Difference]: Finished difference Result 1869 states and 2308 transitions. [2021-11-22 15:27:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 245 [2021-11-22 15:27:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:30,370 INFO L225 Difference]: With dead ends: 1869 [2021-11-22 15:27:30,370 INFO L226 Difference]: Without dead ends: 1215 [2021-11-22 15:27:30,371 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 [2021-11-22 15:27:30,372 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 230 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:30,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 495 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-11-22 15:27:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 952. [2021-11-22 15:27:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.2197686645636172) internal successors, (1160), 951 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1160 transitions. [2021-11-22 15:27:30,483 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1160 transitions. Word has length 245 [2021-11-22 15:27:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:30,484 INFO L470 AbstractCegarLoop]: Abstraction has 952 states and 1160 transitions. [2021-11-22 15:27:30,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1160 transitions. [2021-11-22 15:27:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-22 15:27:30,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:30,490 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:30,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-22 15:27:30,491 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1541329450, now seen corresponding path program 1 times [2021-11-22 15:27:30,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:30,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887401076] [2021-11-22 15:27:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:30,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:30,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:30,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887401076] [2021-11-22 15:27:30,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887401076] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:30,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013145058] [2021-11-22 15:27:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:30,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:30,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:30,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:30,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:27:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:30,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 15:27:30,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-22 15:27:31,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:27:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 44 proven. 11 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-22 15:27:32,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013145058] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:27:32,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:27:32,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 25 [2021-11-22 15:27:32,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950248532] [2021-11-22 15:27:32,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:27:32,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-22 15:27:32,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-22 15:27:32,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:27:32,311 INFO L87 Difference]: Start difference. First operand 952 states and 1160 transitions. Second operand has 25 states, 25 states have (on average 14.24) internal successors, (356), 25 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:50,761 INFO L93 Difference]: Finished difference Result 20411 states and 25712 transitions. [2021-11-22 15:27:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-22 15:27:50,761 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.24) internal successors, (356), 25 states have internal predecessors, (356), 0 states have call successors, (0), 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 251 [2021-11-22 15:27:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:50,814 INFO L225 Difference]: With dead ends: 20411 [2021-11-22 15:27:50,814 INFO L226 Difference]: Without dead ends: 19796 [2021-11-22 15:27:50,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73305 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=17592, Invalid=147650, Unknown=0, NotChecked=0, Total=165242 [2021-11-22 15:27:50,855 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 9609 mSDsluCounter, 14873 mSDsCounter, 0 mSdLazyCounter, 5522 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9609 SdHoareTripleChecker+Valid, 15920 SdHoareTripleChecker+Invalid, 5804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 5522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:50,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9609 Valid, 15920 Invalid, 5804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [282 Valid, 5522 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-22 15:27:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19796 states. [2021-11-22 15:27:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19796 to 2705. [2021-11-22 15:27:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2704 states have (on average 1.2218934911242603) internal successors, (3304), 2704 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3304 transitions. [2021-11-22 15:27:51,353 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3304 transitions. Word has length 251 [2021-11-22 15:27:51,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:51,353 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 3304 transitions. [2021-11-22 15:27:51,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.24) internal successors, (356), 25 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3304 transitions. [2021-11-22 15:27:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-22 15:27:51,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:51,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:51,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:51,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-22 15:27:51,589 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:51,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1399901283, now seen corresponding path program 1 times [2021-11-22 15:27:51,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:51,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206870492] [2021-11-22 15:27:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:51,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-22 15:27:51,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:51,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206870492] [2021-11-22 15:27:51,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206870492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:51,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:51,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:51,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231325331] [2021-11-22 15:27:51,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:51,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:27:51,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:51,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:27:51,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:27:51,635 INFO L87 Difference]: Start difference. First operand 2705 states and 3304 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:51,983 INFO L93 Difference]: Finished difference Result 4995 states and 6102 transitions. [2021-11-22 15:27:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:27:51,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 254 [2021-11-22 15:27:51,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:51,989 INFO L225 Difference]: With dead ends: 4995 [2021-11-22 15:27:51,989 INFO L226 Difference]: Without dead ends: 2303 [2021-11-22 15:27:51,993 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 [2021-11-22 15:27:51,994 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 125 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:51,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 430 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2021-11-22 15:27:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2303. [2021-11-22 15:27:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 1.2180712423979148) internal successors, (2804), 2302 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2804 transitions. [2021-11-22 15:27:52,301 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2804 transitions. Word has length 254 [2021-11-22 15:27:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:52,302 INFO L470 AbstractCegarLoop]: Abstraction has 2303 states and 2804 transitions. [2021-11-22 15:27:52,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:52,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2804 transitions. [2021-11-22 15:27:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-22 15:27:52,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:52,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:52,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-22 15:27:52,308 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:52,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash -430662002, now seen corresponding path program 1 times [2021-11-22 15:27:52,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:52,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072917365] [2021-11-22 15:27:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:52,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-22 15:27:52,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:52,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072917365] [2021-11-22 15:27:52,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072917365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:52,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:52,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:52,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287277103] [2021-11-22 15:27:52,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:52,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:27:52,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:27:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:52,547 INFO L87 Difference]: Start difference. First operand 2303 states and 2804 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:53,023 INFO L93 Difference]: Finished difference Result 4263 states and 5219 transitions. [2021-11-22 15:27:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:27:53,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 257 [2021-11-22 15:27:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:53,029 INFO L225 Difference]: With dead ends: 4263 [2021-11-22 15:27:53,029 INFO L226 Difference]: Without dead ends: 2303 [2021-11-22 15:27:53,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:53,033 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 199 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:53,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 553 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2021-11-22 15:27:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2303. [2021-11-22 15:27:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 1.2167680278019113) internal successors, (2801), 2302 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2801 transitions. [2021-11-22 15:27:53,432 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2801 transitions. Word has length 257 [2021-11-22 15:27:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:53,432 INFO L470 AbstractCegarLoop]: Abstraction has 2303 states and 2801 transitions. [2021-11-22 15:27:53,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2801 transitions. [2021-11-22 15:27:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-22 15:27:53,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:53,439 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:53,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-22 15:27:53,440 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:27:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash 415730249, now seen corresponding path program 1 times [2021-11-22 15:27:53,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:53,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926209157] [2021-11-22 15:27:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:53,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:27:53,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:53,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926209157] [2021-11-22 15:27:53,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926209157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:53,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632114199] [2021-11-22 15:27:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:53,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:53,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:53,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:53,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:27:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:53,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 15:27:53,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 40 proven. 33 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-22 15:27:55,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:27:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-22 15:27:56,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632114199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:27:56,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:27:56,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 13] total 36 [2021-11-22 15:27:56,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229886243] [2021-11-22 15:27:56,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:27:56,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-22 15:27:56,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:56,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-22 15:27:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2021-11-22 15:27:56,564 INFO L87 Difference]: Start difference. First operand 2303 states and 2801 transitions. Second operand has 36 states, 36 states have (on average 13.38888888888889) internal successors, (482), 36 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:28:17,614 INFO L93 Difference]: Finished difference Result 30111 states and 37084 transitions. [2021-11-22 15:28:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2021-11-22 15:28:17,614 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 13.38888888888889) internal successors, (482), 36 states have internal predecessors, (482), 0 states have call successors, (0), 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 258 [2021-11-22 15:28:17,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:28:17,665 INFO L225 Difference]: With dead ends: 30111 [2021-11-22 15:28:17,665 INFO L226 Difference]: Without dead ends: 28257 [2021-11-22 15:28:17,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38979 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=8199, Invalid=88211, Unknown=0, NotChecked=0, Total=96410 [2021-11-22 15:28:17,682 INFO L933 BasicCegarLoop]: 1807 mSDtfsCounter, 6481 mSDsluCounter, 37158 mSDsCounter, 0 mSdLazyCounter, 12241 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6481 SdHoareTripleChecker+Valid, 38965 SdHoareTripleChecker+Invalid, 12488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 12241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:28:17,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6481 Valid, 38965 Invalid, 12488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [247 Valid, 12241 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-22 15:28:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28257 states. [2021-11-22 15:28:18,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28257 to 3413. [2021-11-22 15:28:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 3412 states have (on average 1.2224501758499413) internal successors, (4171), 3412 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 4171 transitions. [2021-11-22 15:28:18,392 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 4171 transitions. Word has length 258 [2021-11-22 15:28:18,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:28:18,393 INFO L470 AbstractCegarLoop]: Abstraction has 3413 states and 4171 transitions. [2021-11-22 15:28:18,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 13.38888888888889) internal successors, (482), 36 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 4171 transitions. [2021-11-22 15:28:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-22 15:28:18,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:28:18,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:28:18,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:28:18,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:28:18,617 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:28:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:28:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1229567157, now seen corresponding path program 1 times [2021-11-22 15:28:18,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:28:18,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982235618] [2021-11-22 15:28:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:28:18,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:28:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:28:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-22 15:28:18,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:28:18,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982235618] [2021-11-22 15:28:18,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982235618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:28:18,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:28:18,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:28:18,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656590314] [2021-11-22 15:28:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:28:18,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:28:18,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:28:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:28:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:28:18,774 INFO L87 Difference]: Start difference. First operand 3413 states and 4171 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:28:19,279 INFO L93 Difference]: Finished difference Result 6449 states and 7912 transitions. [2021-11-22 15:28:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:28:19,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-22 15:28:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:28:19,285 INFO L225 Difference]: With dead ends: 6449 [2021-11-22 15:28:19,285 INFO L226 Difference]: Without dead ends: 3433 [2021-11-22 15:28:19,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:28:19,291 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 345 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:28:19,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 535 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:28:19,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2021-11-22 15:28:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 3429. [2021-11-22 15:28:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3429 states, 3428 states have (on average 1.2190781796966161) internal successors, (4179), 3428 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 4179 transitions. [2021-11-22 15:28:19,746 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 4179 transitions. Word has length 265 [2021-11-22 15:28:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:28:19,746 INFO L470 AbstractCegarLoop]: Abstraction has 3429 states and 4179 transitions. [2021-11-22 15:28:19,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 4179 transitions. [2021-11-22 15:28:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-22 15:28:19,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:28:19,755 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:28:19,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-22 15:28:19,756 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:28:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:28:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1923116928, now seen corresponding path program 1 times [2021-11-22 15:28:19,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:28:19,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414726931] [2021-11-22 15:28:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:28:19,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:28:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:28:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:28:19,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:28:19,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414726931] [2021-11-22 15:28:19,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414726931] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:28:19,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288874348] [2021-11-22 15:28:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:28:19,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:28:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:28:19,981 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:28:19,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 15:28:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:28:20,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 15:28:20,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:28:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 46 proven. 34 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-22 15:28:21,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:28:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 50 proven. 17 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-22 15:28:22,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288874348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:28:22,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:28:22,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 13] total 36 [2021-11-22 15:28:22,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681274287] [2021-11-22 15:28:22,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:28:22,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-22 15:28:22,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:28:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-22 15:28:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2021-11-22 15:28:22,239 INFO L87 Difference]: Start difference. First operand 3429 states and 4179 transitions. Second operand has 36 states, 36 states have (on average 13.666666666666666) internal successors, (492), 36 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:28:51,737 INFO L93 Difference]: Finished difference Result 58433 states and 71990 transitions. [2021-11-22 15:28:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 370 states. [2021-11-22 15:28:51,737 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 13.666666666666666) internal successors, (492), 36 states have internal predecessors, (492), 0 states have call successors, (0), 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 265 [2021-11-22 15:28:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:28:51,808 INFO L225 Difference]: With dead ends: 58433 [2021-11-22 15:28:51,808 INFO L226 Difference]: Without dead ends: 55567 [2021-11-22 15:28:51,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68911 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=13134, Invalid=149678, Unknown=0, NotChecked=0, Total=162812 [2021-11-22 15:28:51,826 INFO L933 BasicCegarLoop]: 2479 mSDtfsCounter, 6025 mSDsluCounter, 53330 mSDsCounter, 0 mSdLazyCounter, 16768 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6025 SdHoareTripleChecker+Valid, 55809 SdHoareTripleChecker+Invalid, 16926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 16768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:28:51,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6025 Valid, 55809 Invalid, 16926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [158 Valid, 16768 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-22 15:28:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55567 states. [2021-11-22 15:28:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55567 to 3445. [2021-11-22 15:28:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 3444 states have (on average 1.2183507549361208) internal successors, (4196), 3444 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4196 transitions. [2021-11-22 15:28:52,671 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4196 transitions. Word has length 265 [2021-11-22 15:28:52,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:28:52,672 INFO L470 AbstractCegarLoop]: Abstraction has 3445 states and 4196 transitions. [2021-11-22 15:28:52,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 13.666666666666666) internal successors, (492), 36 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4196 transitions. [2021-11-22 15:28:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-22 15:28:52,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:28:52,681 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:28:52,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:28:52,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:28:52,897 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:28:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:28:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1008092684, now seen corresponding path program 1 times [2021-11-22 15:28:52,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:28:52,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027872237] [2021-11-22 15:28:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:28:52,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:28:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:28:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-22 15:28:53,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:28:53,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027872237] [2021-11-22 15:28:53,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027872237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:28:53,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:28:53,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:28:53,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813750744] [2021-11-22 15:28:53,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:28:53,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:28:53,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:28:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:28:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:28:53,056 INFO L87 Difference]: Start difference. First operand 3445 states and 4196 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:28:53,726 INFO L93 Difference]: Finished difference Result 6508 states and 7961 transitions. [2021-11-22 15:28:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:28:53,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 281 [2021-11-22 15:28:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:28:53,729 INFO L225 Difference]: With dead ends: 6508 [2021-11-22 15:28:53,729 INFO L226 Difference]: Without dead ends: 3449 [2021-11-22 15:28:53,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:28:53,733 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 195 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:28:53,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 557 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:28:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2021-11-22 15:28:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3429. [2021-11-22 15:28:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3429 states, 3428 states have (on average 1.218203033838973) internal successors, (4176), 3428 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 4176 transitions. [2021-11-22 15:28:54,302 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 4176 transitions. Word has length 281 [2021-11-22 15:28:54,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:28:54,302 INFO L470 AbstractCegarLoop]: Abstraction has 3429 states and 4176 transitions. [2021-11-22 15:28:54,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:28:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 4176 transitions. [2021-11-22 15:28:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-22 15:28:54,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:28:54,311 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:28:54,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-22 15:28:54,311 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:28:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:28:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash 973397544, now seen corresponding path program 1 times [2021-11-22 15:28:54,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:28:54,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362619868] [2021-11-22 15:28:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:28:54,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:28:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:28:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:28:54,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:28:54,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362619868] [2021-11-22 15:28:54,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362619868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:28:54,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19618513] [2021-11-22 15:28:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:28:54,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:28:54,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:28:54,576 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:28:54,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:28:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:28:54,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 15:28:54,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:28:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:28:55,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:28:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:28:55,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19618513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:28:55,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:28:55,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 21 [2021-11-22 15:28:55,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755625029] [2021-11-22 15:28:55,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:28:55,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 15:28:55,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:28:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 15:28:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:28:55,744 INFO L87 Difference]: Start difference. First operand 3429 states and 4176 transitions. Second operand has 21 states, 21 states have (on average 19.61904761904762) internal successors, (412), 21 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:23,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:23,341 INFO L93 Difference]: Finished difference Result 97587 states and 121046 transitions. [2021-11-22 15:30:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1388 states. [2021-11-22 15:30:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 19.61904761904762) internal successors, (412), 21 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2021-11-22 15:30:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:23,457 INFO L225 Difference]: With dead ends: 97587 [2021-11-22 15:30:23,457 INFO L226 Difference]: Without dead ends: 94754 [2021-11-22 15:30:23,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1960 GetRequests, 555 SyntacticMatches, 1 SemanticMatches, 1404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977707 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=114396, Invalid=1861034, Unknown=0, NotChecked=0, Total=1975430 [2021-11-22 15:30:23,558 INFO L933 BasicCegarLoop]: 2710 mSDtfsCounter, 7708 mSDsluCounter, 36311 mSDsCounter, 0 mSdLazyCounter, 12901 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7708 SdHoareTripleChecker+Valid, 39021 SdHoareTripleChecker+Invalid, 13097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 12901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:23,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7708 Valid, 39021 Invalid, 13097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [196 Valid, 12901 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-11-22 15:30:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94754 states. [2021-11-22 15:30:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94754 to 6126. [2021-11-22 15:30:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6126 states, 6125 states have (on average 1.225469387755102) internal successors, (7506), 6125 states have internal predecessors, (7506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6126 states to 6126 states and 7506 transitions. [2021-11-22 15:30:26,068 INFO L78 Accepts]: Start accepts. Automaton has 6126 states and 7506 transitions. Word has length 282 [2021-11-22 15:30:26,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:26,068 INFO L470 AbstractCegarLoop]: Abstraction has 6126 states and 7506 transitions. [2021-11-22 15:30:26,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.61904761904762) internal successors, (412), 21 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6126 states and 7506 transitions. [2021-11-22 15:30:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-22 15:30:26,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:26,082 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:26,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:30:26,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:30:26,293 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:30:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -820007342, now seen corresponding path program 1 times [2021-11-22 15:30:26,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:26,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019981108] [2021-11-22 15:30:26,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:26,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-22 15:30:26,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:26,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019981108] [2021-11-22 15:30:26,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019981108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:26,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:26,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:30:26,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350444259] [2021-11-22 15:30:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:26,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:26,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:26,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:26,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:26,467 INFO L87 Difference]: Start difference. First operand 6126 states and 7506 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:27,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:27,954 INFO L93 Difference]: Finished difference Result 11844 states and 14554 transitions. [2021-11-22 15:30:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:30:27,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 282 [2021-11-22 15:30:27,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:27,960 INFO L225 Difference]: With dead ends: 11844 [2021-11-22 15:30:27,960 INFO L226 Difference]: Without dead ends: 6175 [2021-11-22 15:30:27,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:27,967 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 195 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:27,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 455 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2021-11-22 15:30:29,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 6070. [2021-11-22 15:30:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 1.2252430383918274) internal successors, (7436), 6069 states have internal predecessors, (7436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 7436 transitions. [2021-11-22 15:30:29,374 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 7436 transitions. Word has length 282 [2021-11-22 15:30:29,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:29,374 INFO L470 AbstractCegarLoop]: Abstraction has 6070 states and 7436 transitions. [2021-11-22 15:30:29,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 7436 transitions. [2021-11-22 15:30:29,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-22 15:30:29,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:29,386 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:29,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-22 15:30:29,386 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:30:29,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:29,387 INFO L85 PathProgramCache]: Analyzing trace with hash 587706203, now seen corresponding path program 1 times [2021-11-22 15:30:29,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:29,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854885312] [2021-11-22 15:30:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:29,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:30:29,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854885312] [2021-11-22 15:30:29,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854885312] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:30:29,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770219117] [2021-11-22 15:30:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:29,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:30:29,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:30:29,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:30:29,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 15:30:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:29,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 15:30:29,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:30:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:30:30,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:30:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:30:30,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770219117] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:30:30,882 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:30:30,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2021-11-22 15:30:30,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304925568] [2021-11-22 15:30:30,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:30:30,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:30:30,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:30,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:30:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:30:30,885 INFO L87 Difference]: Start difference. First operand 6070 states and 7436 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:38,567 INFO L93 Difference]: Finished difference Result 32747 states and 40537 transitions. [2021-11-22 15:30:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 15:30:38,568 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 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 282 [2021-11-22 15:30:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:38,595 INFO L225 Difference]: With dead ends: 32747 [2021-11-22 15:30:38,595 INFO L226 Difference]: Without dead ends: 27417 [2021-11-22 15:30:38,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 567 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=503, Invalid=2047, Unknown=0, NotChecked=0, Total=2550 [2021-11-22 15:30:38,602 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 1963 mSDsluCounter, 4773 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:38,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 5702 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:30:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27417 states. [2021-11-22 15:30:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27417 to 13324. [2021-11-22 15:30:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13324 states, 13323 states have (on average 1.2207460782106132) internal successors, (16264), 13323 states have internal predecessors, (16264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13324 states to 13324 states and 16264 transitions. [2021-11-22 15:30:41,252 INFO L78 Accepts]: Start accepts. Automaton has 13324 states and 16264 transitions. Word has length 282 [2021-11-22 15:30:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:41,253 INFO L470 AbstractCegarLoop]: Abstraction has 13324 states and 16264 transitions. [2021-11-22 15:30:41,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 13324 states and 16264 transitions. [2021-11-22 15:30:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-22 15:30:41,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:41,276 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:41,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:30:41,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:30:41,489 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 15:30:41,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1091137989, now seen corresponding path program 1 times [2021-11-22 15:30:41,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:41,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084278918] [2021-11-22 15:30:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:41,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:30:41,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:41,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084278918] [2021-11-22 15:30:41,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084278918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:30:41,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103533687] [2021-11-22 15:30:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:41,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:30:41,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:30:41,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:30:41,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf1ad5-928b-472a-b6bd-09698034dde6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 15:30:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:41,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 15:30:41,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:30:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 7 proven. 47 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:30:43,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:30:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 15:30:43,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103533687] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:30:43,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:30:43,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2021-11-22 15:30:43,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990329444] [2021-11-22 15:30:43,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:30:43,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-22 15:30:43,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-22 15:30:43,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 15:30:43,760 INFO L87 Difference]: Start difference. First operand 13324 states and 16264 transitions. Second operand has 35 states, 35 states have (on average 17.37142857142857) internal successors, (608), 34 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)