./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_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_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/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_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/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_173ec4e4-c171-4053-af33-1781a6fef350/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 b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:30:09,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:30:09,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:30:09,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:30:09,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:30:09,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:30:09,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:30:09,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:30:09,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:30:09,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:30:10,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:30:10,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:30:10,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:30:10,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:30:10,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:30:10,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:30:10,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:30:10,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:30:10,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:30:10,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:30:10,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:30:10,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:30:10,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:30:10,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:30:10,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:30:10,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:30:10,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:30:10,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:30:10,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:30:10,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:30:10,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:30:10,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:30:10,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:30:10,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:30:10,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:30:10,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:30:10,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:30:10,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:30:10,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:30:10,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:30:10,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:30:10,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 13:30:10,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:30:10,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:30:10,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:30:10,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:30:10,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:30:10,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:30:10,149 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:30:10,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:30:10,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:30:10,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:30:10,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:30:10,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:30:10,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:30:10,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:30:10,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:30:10,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:30:10,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:30:10,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:30:10,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:30:10,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:30:10,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:30:10,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:30:10,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:30:10,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:30:10,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:30:10,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:30:10,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:30:10,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:30:10,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:30:10,159 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_173ec4e4-c171-4053-af33-1781a6fef350/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 [2021-11-23 13:30:10,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:30:10,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:30:10,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:30:10,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:30:10,532 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:30:10,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-23 13:30:10,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/data/f021729d4/448bce7cd6c3404092ba38f8280b4e2f/FLAGe9d727fc8 [2021-11-23 13:30:11,701 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:30:11,702 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-23 13:30:11,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/data/f021729d4/448bce7cd6c3404092ba38f8280b4e2f/FLAGe9d727fc8 [2021-11-23 13:30:12,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/data/f021729d4/448bce7cd6c3404092ba38f8280b4e2f [2021-11-23 13:30:12,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:30:12,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:30:12,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:30:12,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:30:12,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:30:12,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:30:12" (1/1) ... [2021-11-23 13:30:12,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a08fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:12, skipping insertion in model container [2021-11-23 13:30:12,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:30:12" (1/1) ... [2021-11-23 13:30:12,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:30:12,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:30:12,745 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-23 13:30:12,747 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-23 13:30:13,112 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_173ec4e4-c171-4053-af33-1781a6fef350/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-23 13:30:14,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:30:14,540 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:30:14,600 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-23 13:30:14,601 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-23 13:30:14,610 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_173ec4e4-c171-4053-af33-1781a6fef350/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-23 13:30:15,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:30:15,180 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:30:15,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15 WrapperNode [2021-11-23 13:30:15,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:30:15,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:30:15,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:30:15,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:30:15,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:15,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:19,776 INFO L137 Inliner]: procedures = 276, calls = 1927, calls flagged for inlining = 628, calls inlined = 12822, statements flattened = 118338 [2021-11-23 13:30:19,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:30:19,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:30:19,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:30:19,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:30:20,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:20,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:21,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:21,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:24,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:24,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:24,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:25,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:30:25,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:30:25,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:30:25,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:30:25,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (1/1) ... [2021-11-23 13:30:25,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:30:25,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:25,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:30:25,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:30:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 13:30:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 13:30:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:30:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:30:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:30:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:30:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 13:30:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 13:30:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:30:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:30:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:30:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:30:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:30:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 13:30:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 13:30:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_work_fall [2021-11-23 13:30:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_work_fall [2021-11-23 13:30:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:30:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:30:25,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:30:26,502 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:30:26,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:31:40,869 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:31:40,989 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:31:40,989 INFO L301 CfgBuilder]: Removed 66 assume(true) statements. [2021-11-23 13:31:41,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:31:41 BoogieIcfgContainer [2021-11-23 13:31:41,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:31:41,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:31:41,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:31:41,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:31:41,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:30:12" (1/3) ... [2021-11-23 13:31:41,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60faa8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:31:41, skipping insertion in model container [2021-11-23 13:31:41,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:30:15" (2/3) ... [2021-11-23 13:31:41,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60faa8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:31:41, skipping insertion in model container [2021-11-23 13:31:41,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:31:41" (3/3) ... [2021-11-23 13:31:41,026 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-23 13:31:41,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:31:41,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-23 13:31:41,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:31:41,209 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 13:31:41,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-23 13:31:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 20049 states, 19974 states have (on average 1.2445679383198158) internal successors, (24859), 20031 states have internal predecessors, (24859), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 13:31:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:31:41,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:31:41,577 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] [2021-11-23 13:31:41,578 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-23 13:31:41,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:31:41,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1949943529, now seen corresponding path program 1 times [2021-11-23 13:31:41,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:31:41,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158126965] [2021-11-23 13:31:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:31:41,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:31:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:31:42,374 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 13:31:42,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:31:42,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158126965] [2021-11-23 13:31:42,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158126965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:31:42,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:31:42,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:31:42,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713714050] [2021-11-23 13:31:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:31:42,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:31:42,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:31:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:31:42,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:31:42,569 INFO L87 Difference]: Start difference. First operand has 20049 states, 19974 states have (on average 1.2445679383198158) internal successors, (24859), 20031 states have internal predecessors, (24859), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:31:44,933 INFO L93 Difference]: Finished difference Result 58807 states and 73032 transitions. [2021-11-23 13:31:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:31:44,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-23 13:31:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:31:45,256 INFO L225 Difference]: With dead ends: 58807 [2021-11-23 13:31:45,256 INFO L226 Difference]: Without dead ends: 38369 [2021-11-23 13:31:45,333 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 13:31:45,338 INFO L933 BasicCegarLoop]: 24262 mSDtfsCounter, 23387 mSDsluCounter, 24196 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23387 SdHoareTripleChecker+Valid, 48458 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:31:45,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23387 Valid, 48458 Invalid, 29 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:31:45,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38369 states. [2021-11-23 13:31:47,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38369 to 38254. [2021-11-23 13:31:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38254 states, 38162 states have (on average 1.2240710654577853) internal successors, (46713), 38219 states have internal predecessors, (46713), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-23 13:31:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38254 states to 38254 states and 46777 transitions. [2021-11-23 13:31:47,364 INFO L78 Accepts]: Start accepts. Automaton has 38254 states and 46777 transitions. Word has length 23 [2021-11-23 13:31:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:31:47,365 INFO L470 AbstractCegarLoop]: Abstraction has 38254 states and 46777 transitions. [2021-11-23 13:31:47,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 38254 states and 46777 transitions. [2021-11-23 13:31:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:31:47,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:31:47,379 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] [2021-11-23 13:31:47,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:31:47,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-23 13:31:47,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:31:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash 661138932, now seen corresponding path program 1 times [2021-11-23 13:31:47,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:31:47,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098153640] [2021-11-23 13:31:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:31:47,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:31:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:31:47,844 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 13:31:47,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:31:47,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098153640] [2021-11-23 13:31:47,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098153640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:31:47,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:31:47,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:31:47,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103767788] [2021-11-23 13:31:47,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:31:47,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:31:47,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:31:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:31:47,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:31:47,849 INFO L87 Difference]: Start difference. First operand 38254 states and 46777 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:31:50,563 INFO L93 Difference]: Finished difference Result 112863 states and 137932 transitions. [2021-11-23 13:31:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:31:50,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-23 13:31:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:31:50,896 INFO L225 Difference]: With dead ends: 112863 [2021-11-23 13:31:50,897 INFO L226 Difference]: Without dead ends: 74628 [2021-11-23 13:31:51,002 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 13:31:51,005 INFO L933 BasicCegarLoop]: 24688 mSDtfsCounter, 22663 mSDsluCounter, 23799 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22663 SdHoareTripleChecker+Valid, 48487 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:31:51,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22663 Valid, 48487 Invalid, 32 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:31:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74628 states. [2021-11-23 13:31:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74628 to 74507. [2021-11-23 13:31:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74507 states, 74379 states have (on average 1.2231543849742534) internal successors, (90977), 74438 states have internal predecessors, (90977), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 13:31:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74507 states to 74507 states and 91105 transitions. [2021-11-23 13:31:53,883 INFO L78 Accepts]: Start accepts. Automaton has 74507 states and 91105 transitions. Word has length 23 [2021-11-23 13:31:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:31:53,892 INFO L470 AbstractCegarLoop]: Abstraction has 74507 states and 91105 transitions. [2021-11-23 13:31:53,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 74507 states and 91105 transitions. [2021-11-23 13:31:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 13:31:53,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:31:53,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:31:53,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:31:53,904 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-23 13:31:53,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:31:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2053668567, now seen corresponding path program 1 times [2021-11-23 13:31:53,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:31:53,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451774722] [2021-11-23 13:31:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:31:53,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:31:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:31:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:31:54,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:31:54,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451774722] [2021-11-23 13:31:54,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451774722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:31:54,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:31:54,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:31:54,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048643902] [2021-11-23 13:31:54,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:31:54,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:31:54,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:31:54,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:31:54,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:31:54,522 INFO L87 Difference]: Start difference. First operand 74507 states and 91105 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:31:56,983 INFO L93 Difference]: Finished difference Result 78309 states and 95882 transitions. [2021-11-23 13:31:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:31:56,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-23 13:31:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:31:57,225 INFO L225 Difference]: With dead ends: 78309 [2021-11-23 13:31:57,225 INFO L226 Difference]: Without dead ends: 78201 [2021-11-23 13:31:57,254 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 13:31:57,261 INFO L933 BasicCegarLoop]: 23703 mSDtfsCounter, 9251 mSDsluCounter, 15947 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9251 SdHoareTripleChecker+Valid, 39650 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:31:57,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9251 Valid, 39650 Invalid, 317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [151 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:31:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78201 states. [2021-11-23 13:32:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78201 to 78201. [2021-11-23 13:32:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78201 states, 78121 states have (on average 1.222411387463038) internal successors, (95496), 78132 states have internal predecessors, (95496), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 13:32:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78201 states to 78201 states and 95624 transitions. [2021-11-23 13:32:00,487 INFO L78 Accepts]: Start accepts. Automaton has 78201 states and 95624 transitions. Word has length 48 [2021-11-23 13:32:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:32:00,488 INFO L470 AbstractCegarLoop]: Abstraction has 78201 states and 95624 transitions. [2021-11-23 13:32:00,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:32:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 78201 states and 95624 transitions. [2021-11-23 13:32:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 13:32:00,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:32:00,511 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:32:00,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:32:00,513 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-23 13:32:00,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:32:00,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1703687983, now seen corresponding path program 1 times [2021-11-23 13:32:00,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:32:00,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904610523] [2021-11-23 13:32:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:32:00,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:32:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:32:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:32:00,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:32:00,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904610523] [2021-11-23 13:32:00,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904610523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:32:00,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:32:00,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:32:00,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665826322] [2021-11-23 13:32:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:32:00,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:32:00,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:32:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:32:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:32:00,779 INFO L87 Difference]: Start difference. First operand 78201 states and 95624 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:32:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:32:03,291 INFO L93 Difference]: Finished difference Result 156387 states and 191232 transitions. [2021-11-23 13:32:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:32:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 13:32:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:32:03,534 INFO L225 Difference]: With dead ends: 156387 [2021-11-23 13:32:03,535 INFO L226 Difference]: Without dead ends: 78205 [2021-11-23 13:32:03,704 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 13:32:03,707 INFO L933 BasicCegarLoop]: 23756 mSDtfsCounter, 0 mSDsluCounter, 23751 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47507 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:32:03,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47507 Invalid, 6 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:32:03,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78205 states. [2021-11-23 13:32:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78205 to 78205. [2021-11-23 13:32:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78205 states, 78125 states have (on average 1.2224) internal successors, (95500), 78136 states have internal predecessors, (95500), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 13:32:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78205 states to 78205 states and 95628 transitions. [2021-11-23 13:32:06,828 INFO L78 Accepts]: Start accepts. Automaton has 78205 states and 95628 transitions. Word has length 60 [2021-11-23 13:32:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:32:06,829 INFO L470 AbstractCegarLoop]: Abstraction has 78205 states and 95628 transitions. [2021-11-23 13:32:06,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:32:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 78205 states and 95628 transitions. [2021-11-23 13:32:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 13:32:06,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:32:06,846 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:32:06,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:32:06,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-23 13:32:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:32:06,848 INFO L85 PathProgramCache]: Analyzing trace with hash 894341357, now seen corresponding path program 1 times [2021-11-23 13:32:06,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:32:06,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589150512] [2021-11-23 13:32:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:32:06,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:32:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:32:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:32:07,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:32:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589150512] [2021-11-23 13:32:07,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589150512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:32:07,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:32:07,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:32:07,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713546110] [2021-11-23 13:32:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:32:07,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:32:07,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:32:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:32:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:32:07,104 INFO L87 Difference]: Start difference. First operand 78205 states and 95628 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:32:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:32:09,988 INFO L93 Difference]: Finished difference Result 156393 states and 191236 transitions. [2021-11-23 13:32:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:32:09,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 13:32:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:32:10,594 INFO L225 Difference]: With dead ends: 156393 [2021-11-23 13:32:10,594 INFO L226 Difference]: Without dead ends: 78207 [2021-11-23 13:32:10,714 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 13:32:10,715 INFO L933 BasicCegarLoop]: 23756 mSDtfsCounter, 0 mSDsluCounter, 23750 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47506 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:32:10,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47506 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:32:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78207 states. [2021-11-23 13:32:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78207 to 78207. [2021-11-23 13:32:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78207 states, 78127 states have (on average 1.2223943067057483) internal successors, (95502), 78138 states have internal predecessors, (95502), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 13:32:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78207 states to 78207 states and 95630 transitions. [2021-11-23 13:32:14,035 INFO L78 Accepts]: Start accepts. Automaton has 78207 states and 95630 transitions. Word has length 60 [2021-11-23 13:32:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:32:14,035 INFO L470 AbstractCegarLoop]: Abstraction has 78207 states and 95630 transitions. [2021-11-23 13:32:14,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:32:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 78207 states and 95630 transitions. [2021-11-23 13:32:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 13:32:14,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:32:14,058 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:32:14,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:32:14,059 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-23 13:32:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:32:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash 698020744, now seen corresponding path program 1 times [2021-11-23 13:32:14,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:32:14,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413008909] [2021-11-23 13:32:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:32:14,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:32:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:32:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:32:14,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:32:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413008909] [2021-11-23 13:32:14,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413008909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:32:14,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:32:14,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:32:14,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024570367] [2021-11-23 13:32:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:32:14,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:32:14,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:32:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:32:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:32:14,877 INFO L87 Difference]: Start difference. First operand 78207 states and 95630 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) [2021-11-23 13:32:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:32:17,077 INFO L93 Difference]: Finished difference Result 156411 states and 191264 transitions. [2021-11-23 13:32:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:32:17,078 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 62 [2021-11-23 13:32:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:32:17,725 INFO L225 Difference]: With dead ends: 156411 [2021-11-23 13:32:17,739 INFO L226 Difference]: Without dead ends: 78223 [2021-11-23 13:32:17,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:32:17,933 INFO L933 BasicCegarLoop]: 23754 mSDtfsCounter, 3 mSDsluCounter, 47502 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 71256 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:32:17,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 71256 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:32:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78223 states. [2021-11-23 13:32:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78223 to 78219. [2021-11-23 13:32:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78219 states, 78139 states have (on average 1.2223601530605714) internal successors, (95514), 78150 states have internal predecessors, (95514), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 13:32:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78219 states to 78219 states and 95642 transitions. [2021-11-23 13:32:20,139 INFO L78 Accepts]: Start accepts. Automaton has 78219 states and 95642 transitions. Word has length 62 [2021-11-23 13:32:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:32:20,140 INFO L470 AbstractCegarLoop]: Abstraction has 78219 states and 95642 transitions. [2021-11-23 13:32:20,140 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) [2021-11-23 13:32:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 78219 states and 95642 transitions. [2021-11-23 13:32:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 13:32:20,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:32:20,161 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:32:20,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:32:20,161 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-23 13:32:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:32:20,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1296123962, now seen corresponding path program 1 times [2021-11-23 13:32:20,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:32:20,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557819726] [2021-11-23 13:32:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:32:20,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:32:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:32:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:32:20,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:32:20,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557819726] [2021-11-23 13:32:20,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557819726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:32:20,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:32:20,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:32:20,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358484381] [2021-11-23 13:32:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:32:20,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:32:20,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:32:20,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:32:20,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:32:20,386 INFO L87 Difference]: Start difference. First operand 78219 states and 95642 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2021-11-23 13:32:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:32:23,208 INFO L93 Difference]: Finished difference Result 156427 states and 191273 transitions. [2021-11-23 13:32:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:32:23,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 62 [2021-11-23 13:32:23,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:32:23,407 INFO L225 Difference]: With dead ends: 156427 [2021-11-23 13:32:23,408 INFO L226 Difference]: Without dead ends: 78222 [2021-11-23 13:32:23,524 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 13:32:23,526 INFO L933 BasicCegarLoop]: 23754 mSDtfsCounter, 0 mSDsluCounter, 23661 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47415 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:32:23,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47415 Invalid, 100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:32:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78222 states. [2021-11-23 13:32:25,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78222 to 78222. [2021-11-23 13:32:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78222 states, 78142 states have (on average 1.2223516162882957) internal successors, (95517), 78153 states have internal predecessors, (95517), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 13:32:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78222 states to 78222 states and 95645 transitions. [2021-11-23 13:32:26,197 INFO L78 Accepts]: Start accepts. Automaton has 78222 states and 95645 transitions. Word has length 62 [2021-11-23 13:32:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:32:26,198 INFO L470 AbstractCegarLoop]: Abstraction has 78222 states and 95645 transitions. [2021-11-23 13:32:26,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2021-11-23 13:32:26,198 INFO L276 IsEmpty]: Start isEmpty. Operand 78222 states and 95645 transitions. [2021-11-23 13:32:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 13:32:26,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:32:26,213 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:32:26,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:32:26,214 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-23 13:32:26,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:32:26,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1288072622, now seen corresponding path program 1 times [2021-11-23 13:32:26,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:32:26,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211536638] [2021-11-23 13:32:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:32:26,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:32:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:32:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:32:26,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:32:26,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211536638] [2021-11-23 13:32:26,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211536638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:32:26,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733653202] [2021-11-23 13:32:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:32:26,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:32:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:32:26,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:32:26,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173ec4e4-c171-4053-af33-1781a6fef350/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:32:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:32:27,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 13:32:27,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:32:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:32:28,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:32:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:32:28,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733653202] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 13:32:28,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:32:28,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 9 [2021-11-23 13:32:28,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053660639] [2021-11-23 13:32:28,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:32:28,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:32:28,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:32:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:32:28,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:32:28,276 INFO L87 Difference]: Start difference. First operand 78222 states and 95645 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)