./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:40:05,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:40:05,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:40:05,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:40:05,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:40:05,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:40:05,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:40:05,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:40:05,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:40:05,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:40:05,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:40:05,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:40:05,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:40:05,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:40:05,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:40:05,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:40:05,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:40:05,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:40:05,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:40:05,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:40:05,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:40:05,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:40:05,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:40:05,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:40:05,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:40:05,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:40:05,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:40:05,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:40:05,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:40:05,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:40:05,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:40:05,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:40:05,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:40:05,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:40:05,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:40:05,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:40:05,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:40:05,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:40:05,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:40:05,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:40:05,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:40:05,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 13:40:05,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:40:05,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:40:05,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:40:05,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:40:05,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:40:05,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:40:05,345 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:40:05,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:40:05,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:40:05,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:40:05,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:40:05,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:40:05,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:40:05,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:40:05,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:40:05,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:40:05,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:40:05,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:40:05,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:40:05,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:40:05,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:40:05,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:40:05,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:40:05,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:40:05,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:40:05,350 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:40:05,350 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:40:05,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:40:05,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:40:05,351 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_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd [2021-11-23 13:40:05,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:40:05,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:40:05,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:40:05,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:40:05,673 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:40:05,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-23 13:40:05,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/data/920a3dcd7/b7f9025585ce41d296d455d06a9eae5c/FLAGcc4e8815f [2021-11-23 13:40:06,693 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:40:06,694 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-23 13:40:06,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/data/920a3dcd7/b7f9025585ce41d296d455d06a9eae5c/FLAGcc4e8815f [2021-11-23 13:40:07,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/data/920a3dcd7/b7f9025585ce41d296d455d06a9eae5c [2021-11-23 13:40:07,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:40:07,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:40:07,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:40:07,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:40:07,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:40:07,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:40:07" (1/1) ... [2021-11-23 13:40:07,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723dbb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:07, skipping insertion in model container [2021-11-23 13:40:07,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:40:07" (1/1) ... [2021-11-23 13:40:07,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:40:07,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:40:08,757 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_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-23 13:40:08,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:40:08,898 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:40:09,232 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_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-23 13:40:09,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:40:09,344 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:40:09,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09 WrapperNode [2021-11-23 13:40:09,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:40:09,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:40:09,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:40:09,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:40:09,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:09,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:10,877 INFO L137 Inliner]: procedures = 222, calls = 2591, calls flagged for inlining = 448, calls inlined = 3434, statements flattened = 44086 [2021-11-23 13:40:10,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:40:10,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:40:10,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:40:10,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:40:10,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:10,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:11,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:11,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:12,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:12,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:12,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:12,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:40:12,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:40:12,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:40:12,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:40:12,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (1/1) ... [2021-11-23 13:40:12,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:40:12,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:12,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:12,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23c6ec1-50ba-4b5f-8c60-0651ee6ffd34/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:40:12,574 INFO L130 BoogieDeclarations]: Found specification of procedure gr_finish_request [2021-11-23 13:40:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_finish_request [2021-11-23 13:40:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 13:40:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 13:40:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dequeue [2021-11-23 13:40:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dequeue [2021-11-23 13:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_setup [2021-11-23 13:40:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_setup [2021-11-23 13:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:40:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:40:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 13:40:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 13:40:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:40:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:40:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:40:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:40:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:40:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dma_advance [2021-11-23 13:40:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dma_advance [2021-11-23 13:40:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 13:40:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 13:40:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:40:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:40:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:40:13,432 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:40:13,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:40:34,169 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:40:34,230 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:40:34,230 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:40:34,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:34 BoogieIcfgContainer [2021-11-23 13:40:34,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:40:34,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:40:34,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:40:34,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:40:34,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:40:07" (1/3) ... [2021-11-23 13:40:34,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0e2e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:40:34, skipping insertion in model container [2021-11-23 13:40:34,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:09" (2/3) ... [2021-11-23 13:40:34,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0e2e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:40:34, skipping insertion in model container [2021-11-23 13:40:34,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:34" (3/3) ... [2021-11-23 13:40:34,251 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-23 13:40:34,257 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:40:34,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-11-23 13:40:34,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:40:34,343 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:40:34,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-11-23 13:40:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 7571 states, 7431 states have (on average 1.37801103485399) internal successors, (10240), 7553 states have internal predecessors, (10240), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 13:40:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 13:40:34,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:34,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:34,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 13:40:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1028106419, now seen corresponding path program 1 times [2021-11-23 13:40:34,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:34,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597626846] [2021-11-23 13:40:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:34,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:35,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:35,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597626846] [2021-11-23 13:40:35,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597626846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:35,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:35,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:40:35,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957997228] [2021-11-23 13:40:35,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:35,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:40:35,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:35,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:40:35,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:40:35,276 INFO L87 Difference]: Start difference. First operand has 7571 states, 7431 states have (on average 1.37801103485399) internal successors, (10240), 7553 states have internal predecessors, (10240), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:35,792 INFO L93 Difference]: Finished difference Result 15054 states and 20641 transitions. [2021-11-23 13:40:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:40:35,795 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-23 13:40:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:35,865 INFO L225 Difference]: With dead ends: 15054 [2021-11-23 13:40:35,866 INFO L226 Difference]: Without dead ends: 7431 [2021-11-23 13:40:35,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:40:35,899 INFO L933 BasicCegarLoop]: 9938 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9938 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:35,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9938 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:40:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2021-11-23 13:40:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7431. [2021-11-23 13:40:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7431 states, 7292 states have (on average 1.3347504114097641) internal successors, (9733), 7413 states have internal predecessors, (9733), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 13:40:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7431 states to 7431 states and 9833 transitions. [2021-11-23 13:40:36,293 INFO L78 Accepts]: Start accepts. Automaton has 7431 states and 9833 transitions. Word has length 55 [2021-11-23 13:40:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:36,294 INFO L470 AbstractCegarLoop]: Abstraction has 7431 states and 9833 transitions. [2021-11-23 13:40:36,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7431 states and 9833 transitions. [2021-11-23 13:40:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 13:40:36,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:36,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:36,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:40:36,300 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 13:40:36,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1084413355, now seen corresponding path program 1 times [2021-11-23 13:40:36,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:36,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180536466] [2021-11-23 13:40:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:36,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:36,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:36,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180536466] [2021-11-23 13:40:36,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180536466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:36,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:36,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:40:36,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095407467] [2021-11-23 13:40:36,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:36,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:40:36,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:40:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:40:36,809 INFO L87 Difference]: Start difference. First operand 7431 states and 9833 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:37,752 INFO L93 Difference]: Finished difference Result 21771 states and 28809 transitions. [2021-11-23 13:40:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:40:37,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-23 13:40:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:37,850 INFO L225 Difference]: With dead ends: 21771 [2021-11-23 13:40:37,850 INFO L226 Difference]: Without dead ends: 14380 [2021-11-23 13:40:37,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:40:37,872 INFO L933 BasicCegarLoop]: 9918 mSDtfsCounter, 9225 mSDsluCounter, 9753 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9225 SdHoareTripleChecker+Valid, 19671 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:37,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9225 Valid, 19671 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:40:37,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14380 states. [2021-11-23 13:40:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14380 to 14220. [2021-11-23 13:40:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14220 states, 14028 states have (on average 1.3363273453093811) internal successors, (18746), 14186 states have internal predecessors, (18746), 98 states have call successors, (98), 10 states have call predecessors, (98), 10 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2021-11-23 13:40:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14220 states to 14220 states and 18942 transitions. [2021-11-23 13:40:38,406 INFO L78 Accepts]: Start accepts. Automaton has 14220 states and 18942 transitions. Word has length 55 [2021-11-23 13:40:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:38,407 INFO L470 AbstractCegarLoop]: Abstraction has 14220 states and 18942 transitions. [2021-11-23 13:40:38,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 14220 states and 18942 transitions. [2021-11-23 13:40:38,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 13:40:38,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:38,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:38,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:40:38,424 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 13:40:38,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:38,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2050212412, now seen corresponding path program 1 times [2021-11-23 13:40:38,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:38,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756093778] [2021-11-23 13:40:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:38,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:38,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:38,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756093778] [2021-11-23 13:40:38,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756093778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:38,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:38,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:40:38,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106546774] [2021-11-23 13:40:38,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:38,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:40:38,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:38,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:40:38,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:40:38,803 INFO L87 Difference]: Start difference. First operand 14220 states and 18942 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:40,241 INFO L93 Difference]: Finished difference Result 47466 states and 63157 transitions. [2021-11-23 13:40:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:40:40,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-23 13:40:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:40,408 INFO L225 Difference]: With dead ends: 47466 [2021-11-23 13:40:40,408 INFO L226 Difference]: Without dead ends: 33286 [2021-11-23 13:40:40,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:40:40,462 INFO L933 BasicCegarLoop]: 14117 mSDtfsCounter, 13254 mSDsluCounter, 19694 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13277 SdHoareTripleChecker+Valid, 33811 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:40,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13277 Valid, 33811 Invalid, 89 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:40:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33286 states. [2021-11-23 13:40:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33286 to 25610. [2021-11-23 13:40:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25610 states, 25320 states have (on average 1.338823064770932) internal successors, (33899), 25545 states have internal predecessors, (33899), 186 states have call successors, (186), 20 states have call predecessors, (186), 20 states have return successors, (186), 178 states have call predecessors, (186), 186 states have call successors, (186) [2021-11-23 13:40:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25610 states to 25610 states and 34271 transitions. [2021-11-23 13:40:41,734 INFO L78 Accepts]: Start accepts. Automaton has 25610 states and 34271 transitions. Word has length 93 [2021-11-23 13:40:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:41,736 INFO L470 AbstractCegarLoop]: Abstraction has 25610 states and 34271 transitions. [2021-11-23 13:40:41,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 25610 states and 34271 transitions. [2021-11-23 13:40:41,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 13:40:41,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:41,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:41,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:40:41,756 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 13:40:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash 283901797, now seen corresponding path program 1 times [2021-11-23 13:40:41,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:41,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012426013] [2021-11-23 13:40:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:41,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:42,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:42,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012426013] [2021-11-23 13:40:42,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012426013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:42,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:42,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:40:42,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071331303] [2021-11-23 13:40:42,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:42,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:40:42,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:42,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:40:42,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:40:42,174 INFO L87 Difference]: Start difference. First operand 25610 states and 34271 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:44,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:44,443 INFO L93 Difference]: Finished difference Result 68576 states and 91521 transitions. [2021-11-23 13:40:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:40:44,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-23 13:40:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:44,623 INFO L225 Difference]: With dead ends: 68576 [2021-11-23 13:40:44,624 INFO L226 Difference]: Without dead ends: 50070 [2021-11-23 13:40:44,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:40:44,687 INFO L933 BasicCegarLoop]: 14108 mSDtfsCounter, 17481 mSDsluCounter, 19674 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17504 SdHoareTripleChecker+Valid, 33782 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:44,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17504 Valid, 33782 Invalid, 136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:40:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50070 states. [2021-11-23 13:40:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50070 to 37944. [2021-11-23 13:40:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37944 states, 37566 states have (on average 1.3387637757546718) internal successors, (50292), 37850 states have internal predecessors, (50292), 264 states have call successors, (264), 30 states have call predecessors, (264), 30 states have return successors, (264), 252 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-23 13:40:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37944 states to 37944 states and 50820 transitions. [2021-11-23 13:40:46,423 INFO L78 Accepts]: Start accepts. Automaton has 37944 states and 50820 transitions. Word has length 94 [2021-11-23 13:40:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:46,424 INFO L470 AbstractCegarLoop]: Abstraction has 37944 states and 50820 transitions. [2021-11-23 13:40:46,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 37944 states and 50820 transitions. [2021-11-23 13:40:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 13:40:46,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:46,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:46,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:40:46,446 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 13:40:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -638164744, now seen corresponding path program 1 times [2021-11-23 13:40:46,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:46,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254814169] [2021-11-23 13:40:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:46,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:46,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:46,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254814169] [2021-11-23 13:40:46,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254814169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:46,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:46,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:40:46,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80466345] [2021-11-23 13:40:46,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:46,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:40:46,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:46,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:40:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:40:46,944 INFO L87 Difference]: Start difference. First operand 37944 states and 50820 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:49,301 INFO L93 Difference]: Finished difference Result 98670 states and 131824 transitions. [2021-11-23 13:40:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:40:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-23 13:40:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:49,658 INFO L225 Difference]: With dead ends: 98670 [2021-11-23 13:40:49,658 INFO L226 Difference]: Without dead ends: 67246 [2021-11-23 13:40:49,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:40:49,719 INFO L933 BasicCegarLoop]: 14109 mSDtfsCounter, 17495 mSDsluCounter, 23831 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17518 SdHoareTripleChecker+Valid, 37940 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:49,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17518 Valid, 37940 Invalid, 137 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [38 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:40:49,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67246 states. [2021-11-23 13:40:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67246 to 49202. [2021-11-23 13:40:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49202 states, 48746 states have (on average 1.3390432035449062) internal successors, (65273), 49081 states have internal predecessors, (65273), 332 states have call successors, (332), 40 states have call predecessors, (332), 40 states have return successors, (332), 316 states have call predecessors, (332), 332 states have call successors, (332) [2021-11-23 13:40:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49202 states to 49202 states and 65937 transitions. [2021-11-23 13:40:51,876 INFO L78 Accepts]: Start accepts. Automaton has 49202 states and 65937 transitions. Word has length 95 [2021-11-23 13:40:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:51,877 INFO L470 AbstractCegarLoop]: Abstraction has 49202 states and 65937 transitions. [2021-11-23 13:40:51,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 49202 states and 65937 transitions. [2021-11-23 13:40:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 13:40:51,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:51,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:51,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:40:51,898 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 13:40:51,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash 923039076, now seen corresponding path program 1 times [2021-11-23 13:40:51,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:51,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597535208] [2021-11-23 13:40:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:51,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:52,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:52,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597535208] [2021-11-23 13:40:52,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597535208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:52,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:52,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:40:52,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808186856] [2021-11-23 13:40:52,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:52,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:40:52,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:52,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:40:52,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:40:52,207 INFO L87 Difference]: Start difference. First operand 49202 states and 65937 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:55,560 INFO L93 Difference]: Finished difference Result 159968 states and 214075 transitions. [2021-11-23 13:40:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:40:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-23 13:40:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:55,985 INFO L225 Difference]: With dead ends: 159968 [2021-11-23 13:40:55,986 INFO L226 Difference]: Without dead ends: 110806 [2021-11-23 13:40:56,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:40:56,092 INFO L933 BasicCegarLoop]: 14127 mSDtfsCounter, 13278 mSDsluCounter, 19655 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13301 SdHoareTripleChecker+Valid, 33782 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:56,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13301 Valid, 33782 Invalid, 69 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:40:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110806 states. [2021-11-23 13:40:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110806 to 87804. [2021-11-23 13:40:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87804 states, 87016 states have (on average 1.3418107014801877) internal successors, (116759), 87571 states have internal predecessors, (116759), 624 states have call successors, (624), 80 states have call predecessors, (624), 80 states have return successors, (624), 592 states have call predecessors, (624), 624 states have call successors, (624) [2021-11-23 13:40:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87804 states to 87804 states and 118007 transitions. [2021-11-23 13:40:59,413 INFO L78 Accepts]: Start accepts. Automaton has 87804 states and 118007 transitions. Word has length 96 [2021-11-23 13:40:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:59,413 INFO L470 AbstractCegarLoop]: Abstraction has 87804 states and 118007 transitions. [2021-11-23 13:40:59,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:40:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 87804 states and 118007 transitions. [2021-11-23 13:40:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 13:40:59,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:59,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:59,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:40:59,433 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 13:40:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1586748695, now seen corresponding path program 1 times [2021-11-23 13:40:59,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:59,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153139063] [2021-11-23 13:40:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:59,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:59,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:59,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153139063] [2021-11-23 13:40:59,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153139063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:59,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:59,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:40:59,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318287164] [2021-11-23 13:40:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:59,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:40:59,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:40:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:40:59,741 INFO L87 Difference]: Start difference. First operand 87804 states and 118007 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:04,291 INFO L93 Difference]: Finished difference Result 221400 states and 296981 transitions. [2021-11-23 13:41:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:41:04,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-23 13:41:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:05,059 INFO L225 Difference]: With dead ends: 221400 [2021-11-23 13:41:05,059 INFO L226 Difference]: Without dead ends: 142830 [2021-11-23 13:41:05,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:05,175 INFO L933 BasicCegarLoop]: 14109 mSDtfsCounter, 17510 mSDsluCounter, 19669 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17533 SdHoareTripleChecker+Valid, 33778 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:05,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17533 Valid, 33778 Invalid, 135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:41:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142830 states. [2021-11-23 13:41:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142830 to 105570. [2021-11-23 13:41:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105570 states, 104656 states have (on average 1.3423310655863019) internal successors, (140483), 105289 states have internal predecessors, (140483), 730 states have call successors, (730), 100 states have call predecessors, (730), 100 states have return successors, (730), 690 states have call predecessors, (730), 730 states have call successors, (730) [2021-11-23 13:41:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105570 states to 105570 states and 141943 transitions. [2021-11-23 13:41:08,839 INFO L78 Accepts]: Start accepts. Automaton has 105570 states and 141943 transitions. Word has length 96 [2021-11-23 13:41:08,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:08,841 INFO L470 AbstractCegarLoop]: Abstraction has 105570 states and 141943 transitions. [2021-11-23 13:41:08,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 105570 states and 141943 transitions. [2021-11-23 13:41:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 13:41:08,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:08,860 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:41:08,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:41:08,860 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 13:41:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1227292905, now seen corresponding path program 1 times [2021-11-23 13:41:08,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:08,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488659082] [2021-11-23 13:41:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:08,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:41:09,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:09,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488659082] [2021-11-23 13:41:09,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488659082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:09,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:09,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:41:09,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508886170] [2021-11-23 13:41:09,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:09,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:09,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:09,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:09,151 INFO L87 Difference]: Start difference. First operand 105570 states and 141943 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:12,222 INFO L93 Difference]: Finished difference Result 105570 states and 141943 transitions. [2021-11-23 13:41:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:12,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 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 97 [2021-11-23 13:41:12,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:12,490 INFO L225 Difference]: With dead ends: 105570 [2021-11-23 13:41:12,490 INFO L226 Difference]: Without dead ends: 105568 [2021-11-23 13:41:12,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:12,535 INFO L933 BasicCegarLoop]: 9830 mSDtfsCounter, 1215 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 18043 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:12,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 18043 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:41:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105568 states.