./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:42,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:42,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:42,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:42,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:42,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:42,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:42,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:42,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:42,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:42,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:42,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:42,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:42,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:42,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:42,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:42,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:42,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:42,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:42,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:42,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:42,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:42,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:42,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:42,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:42,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:42,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:42,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:42,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:42,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:42,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:42,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:42,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:42,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:42,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:42,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:42,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:42,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:42,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:42,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:42,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:42,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:21:42,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:42,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:42,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:42,284 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:42,284 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:42,284 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:42,285 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:21:42,285 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:42,285 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:42,285 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:21:42,286 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:21:42,287 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:42,287 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:21:42,287 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:21:42,287 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:21:42,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:42,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:21:42,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:42,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:42,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:42,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:42,290 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:42,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:42,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:42,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:42,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:42,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:42,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:42,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:42,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:42,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:42,294 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:21:42,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:21:42,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:42,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:42,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:42,295 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e [2021-11-03 04:21:42,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:42,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:42,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:42,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:42,596 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:42,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-03 04:21:42,666 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data/b9da1bcb2/34eaae014f4c42609b8e3c6f867ecb51/FLAG68e5f8569 [2021-11-03 04:21:43,734 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:43,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-03 04:21:43,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data/b9da1bcb2/34eaae014f4c42609b8e3c6f867ecb51/FLAG68e5f8569 [2021-11-03 04:21:44,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data/b9da1bcb2/34eaae014f4c42609b8e3c6f867ecb51 [2021-11-03 04:21:44,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:44,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:44,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:44,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:44,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:44,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:44" (1/1) ... [2021-11-03 04:21:44,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33797c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:44, skipping insertion in model container [2021-11-03 04:21:44,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:44" (1/1) ... [2021-11-03 04:21:44,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:44,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:46,463 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:21:46,561 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:21:46,563 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:21:48,167 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-03 04:21:48,178 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-03 04:21:48,179 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-03 04:21:48,184 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-03 04:21:48,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:48,291 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:21:48,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e171e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:48, skipping insertion in model container [2021-11-03 04:21:48,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:48,292 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:21:48,295 INFO L168 Benchmark]: Toolchain (without parser) took 4176.55 ms. Allocated memory was 102.8 MB in the beginning and 140.5 MB in the end (delta: 37.7 MB). Free memory was 56.7 MB in the beginning and 66.9 MB in the end (delta: -10.3 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:48,296 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 102.8 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:21:48,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4173.85 ms. Allocated memory was 102.8 MB in the beginning and 140.5 MB in the end (delta: 37.7 MB). Free memory was 56.4 MB in the beginning and 66.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:48,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 102.8 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4173.85 ms. Allocated memory was 102.8 MB in the beginning and 140.5 MB in the end (delta: 37.7 MB). Free memory was 56.4 MB in the beginning and 66.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6978]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:50,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:50,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:50,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:50,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:50,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:50,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:50,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:50,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:50,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:50,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:50,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:50,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:50,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:50,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:50,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:50,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:50,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:50,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:50,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:50,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:50,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:50,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:50,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:50,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:50,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:50,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:50,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:50,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:50,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:50,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:50,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:50,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:50,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:50,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:50,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:50,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:50,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:50,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:50,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:50,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:50,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:21:50,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:50,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:50,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:50,744 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:50,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:50,744 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:50,744 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:50,744 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:50,744 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:50,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:50,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:50,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:50,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:50,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:50,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:50,746 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:21:50,746 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:21:50,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:50,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:50,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:50,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:50,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:21:50,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:50,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:50,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:50,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:50,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:50,748 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:21:50,748 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:50,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:50,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:50,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:50,749 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e [2021-11-03 04:21:51,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:51,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:51,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:51,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:51,230 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:51,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-03 04:21:51,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data/50336891a/a68c30fba75c4f95bbf10f634c1d0057/FLAG46d8078c2 [2021-11-03 04:21:52,365 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:52,366 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-03 04:21:52,412 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data/50336891a/a68c30fba75c4f95bbf10f634c1d0057/FLAG46d8078c2 [2021-11-03 04:21:52,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/data/50336891a/a68c30fba75c4f95bbf10f634c1d0057 [2021-11-03 04:21:52,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:52,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:52,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:52,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:52,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:52,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67135c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:52, skipping insertion in model container [2021-11-03 04:21:52,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:52" (1/1) ... [2021-11-03 04:21:52,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:52,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:56,820 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-03 04:21:56,823 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-03 04:21:56,824 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-03 04:21:56,825 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-03 04:21:56,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:56,910 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:21:57,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:57,493 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-03 04:21:57,494 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-03 04:21:57,494 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-03 04:21:57,494 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-03 04:21:57,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:57,570 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:21:58,047 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-03 04:21:58,047 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-03 04:21:58,048 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-03 04:21:58,048 WARN L228 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_5a47001a-f1f9-4fa8-81bb-6651ee3982af/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-03 04:21:58,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:58,569 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:21:58,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58 WrapperNode [2021-11-03 04:21:58,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:58,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:58,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:21:58,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:21:58,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:21:58,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:21:59,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:59,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:21:59,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:21:59,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:21:59,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:21:59,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:21:59,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:21:59,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:22:00,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:22:00,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:22:00,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:22:00,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:22:00,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:22:00,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:22:00,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:22:00,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (1/1) ... [2021-11-03 04:22:00,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:00,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:22:00,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:22:00,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:22:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:22:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:22:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:22:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:22:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:22:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:22:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:22:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 04:22:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:22:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:22:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:22:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:22:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:22:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:22:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:22:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:22:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:22:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:22:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:22:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:22:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:22:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:22:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:22:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:22:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:22:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:22:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 04:22:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:22:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:25:05,975 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0bv32; [2021-11-03 04:25:05,975 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0bv32; [2021-11-03 04:25:05,975 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0bv32; [2021-11-03 04:25:05,976 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0bv32; [2021-11-03 04:25:05,976 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 04:25:05,977 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-03 04:25:06,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:25:06,021 INFO L299 CfgBuilder]: Removed 5902 assume(true) statements. [2021-11-03 04:25:06,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:06 BoogieIcfgContainer [2021-11-03 04:25:06,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:25:06,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:25:06,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:25:06,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:25:06,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:21:52" (1/3) ... [2021-11-03 04:25:06,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbe60d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:06, skipping insertion in model container [2021-11-03 04:25:06,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:58" (2/3) ... [2021-11-03 04:25:06,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbe60d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:06, skipping insertion in model container [2021-11-03 04:25:06,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:06" (3/3) ... [2021-11-03 04:25:06,037 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-03 04:25:06,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:25:06,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-03 04:25:06,111 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:25:06,116 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=FINITE_AUTOMATA, 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 [2021-11-03 04:25:06,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-03 04:25:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 4676 states, 4589 states have (on average 1.2933100893440836) internal successors, (5935), 4675 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 04:25:06,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:06,210 INFO L513 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] [2021-11-03 04:25:06,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:25:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1147573545, now seen corresponding path program 1 times [2021-11-03 04:25:06,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:06,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904222757] [2021-11-03 04:25:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:06,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:06,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:06,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:06,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:25:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:09,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:25:09,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:09,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:09,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:09,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904222757] [2021-11-03 04:25:09,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904222757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:09,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:09,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:25:09,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605483392] [2021-11-03 04:25:09,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:25:09,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:09,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:25:09,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:09,740 INFO L87 Difference]: Start difference. First operand has 4676 states, 4589 states have (on average 1.2933100893440836) internal successors, (5935), 4675 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:12,931 INFO L93 Difference]: Finished difference Result 17883 states and 22692 transitions. [2021-11-03 04:25:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:25:12,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-03 04:25:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:13,041 INFO L225 Difference]: With dead ends: 17883 [2021-11-03 04:25:13,042 INFO L226 Difference]: Without dead ends: 12917 [2021-11-03 04:25:13,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:13,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12917 states. [2021-11-03 04:25:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12917 to 12689. [2021-11-03 04:25:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12689 states, 12602 states have (on average 1.2346452943977146) internal successors, (15559), 12688 states have internal predecessors, (15559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12689 states to 12689 states and 15559 transitions. [2021-11-03 04:25:13,638 INFO L78 Accepts]: Start accepts. Automaton has 12689 states and 15559 transitions. Word has length 63 [2021-11-03 04:25:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:13,641 INFO L470 AbstractCegarLoop]: Abstraction has 12689 states and 15559 transitions. [2021-11-03 04:25:13,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12689 states and 15559 transitions. [2021-11-03 04:25:13,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:25:13,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:13,652 INFO L513 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] [2021-11-03 04:25:13,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:13,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:13,870 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:25:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1890311088, now seen corresponding path program 1 times [2021-11-03 04:25:13,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:13,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426684065] [2021-11-03 04:25:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:13,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:13,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:13,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:13,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:25:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:16,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:25:16,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:16,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:17,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:17,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426684065] [2021-11-03 04:25:17,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426684065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:17,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:17,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:25:17,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187223270] [2021-11-03 04:25:17,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:25:17,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:25:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:17,055 INFO L87 Difference]: Start difference. First operand 12689 states and 15559 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:21,486 INFO L93 Difference]: Finished difference Result 46182 states and 56508 transitions. [2021-11-03 04:25:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:25:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 04:25:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:21,655 INFO L225 Difference]: With dead ends: 46182 [2021-11-03 04:25:21,655 INFO L226 Difference]: Without dead ends: 33625 [2021-11-03 04:25:21,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33625 states. [2021-11-03 04:25:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33625 to 31819. [2021-11-03 04:25:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31819 states, 31732 states have (on average 1.235282995083827) internal successors, (39198), 31818 states have internal predecessors, (39198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31819 states to 31819 states and 39198 transitions. [2021-11-03 04:25:23,101 INFO L78 Accepts]: Start accepts. Automaton has 31819 states and 39198 transitions. Word has length 66 [2021-11-03 04:25:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:23,102 INFO L470 AbstractCegarLoop]: Abstraction has 31819 states and 39198 transitions. [2021-11-03 04:25:23,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 31819 states and 39198 transitions. [2021-11-03 04:25:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 04:25:23,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:23,105 INFO L513 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] [2021-11-03 04:25:23,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:23,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:23,329 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:25:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:23,330 INFO L85 PathProgramCache]: Analyzing trace with hash 732124952, now seen corresponding path program 1 times [2021-11-03 04:25:23,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:23,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900703691] [2021-11-03 04:25:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:23,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:23,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:23,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:23,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:25:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:26,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:25:26,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:26,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:26,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:26,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900703691] [2021-11-03 04:25:26,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900703691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:26,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:26,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:25:26,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715600882] [2021-11-03 04:25:26,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:25:26,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:25:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:25:26,839 INFO L87 Difference]: Start difference. First operand 31819 states and 39198 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:30,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:30,718 INFO L93 Difference]: Finished difference Result 79589 states and 98006 transitions. [2021-11-03 04:25:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:25:30,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-03 04:25:30,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:30,866 INFO L225 Difference]: With dead ends: 79589 [2021-11-03 04:25:30,866 INFO L226 Difference]: Without dead ends: 47902 [2021-11-03 04:25:30,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:25:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47902 states. [2021-11-03 04:25:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47902 to 46921. [2021-11-03 04:25:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46921 states, 46834 states have (on average 1.2338472050219926) internal successors, (57786), 46920 states have internal predecessors, (57786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46921 states to 46921 states and 57786 transitions. [2021-11-03 04:25:33,782 INFO L78 Accepts]: Start accepts. Automaton has 46921 states and 57786 transitions. Word has length 69 [2021-11-03 04:25:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:33,783 INFO L470 AbstractCegarLoop]: Abstraction has 46921 states and 57786 transitions. [2021-11-03 04:25:33,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 46921 states and 57786 transitions. [2021-11-03 04:25:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:25:33,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:33,788 INFO L513 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] [2021-11-03 04:25:33,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:34,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:34,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:25:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:34,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1946669987, now seen corresponding path program 1 times [2021-11-03 04:25:34,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:34,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958544890] [2021-11-03 04:25:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:34,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:34,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:34,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:34,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:25:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:36,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:25:36,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:36,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:37,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:37,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958544890] [2021-11-03 04:25:37,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958544890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:37,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:37,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:25:37,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528312094] [2021-11-03 04:25:37,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:25:37,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:25:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:37,223 INFO L87 Difference]: Start difference. First operand 46921 states and 57786 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:41,659 INFO L93 Difference]: Finished difference Result 101169 states and 124966 transitions. [2021-11-03 04:25:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:25:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 70 [2021-11-03 04:25:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:41,821 INFO L225 Difference]: With dead ends: 101169 [2021-11-03 04:25:41,821 INFO L226 Difference]: Without dead ends: 54380 [2021-11-03 04:25:41,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54380 states. [2021-11-03 04:25:43,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54380 to 54044. [2021-11-03 04:25:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54044 states, 53957 states have (on average 1.2389124673351002) internal successors, (66848), 54043 states have internal predecessors, (66848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54044 states to 54044 states and 66848 transitions. [2021-11-03 04:25:43,969 INFO L78 Accepts]: Start accepts. Automaton has 54044 states and 66848 transitions. Word has length 70 [2021-11-03 04:25:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:43,970 INFO L470 AbstractCegarLoop]: Abstraction has 54044 states and 66848 transitions. [2021-11-03 04:25:43,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 54044 states and 66848 transitions. [2021-11-03 04:25:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 04:25:43,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:43,972 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:44,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:44,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:44,193 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:25:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash 295490258, now seen corresponding path program 1 times [2021-11-03 04:25:44,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:44,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827255241] [2021-11-03 04:25:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:44,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:44,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:44,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:25:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:46,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:25:46,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:25:47,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:25:48,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:48,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827255241] [2021-11-03 04:25:48,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827255241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:48,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:48,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:25:48,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077210810] [2021-11-03 04:25:48,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:25:48,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:48,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:25:48,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:25:48,210 INFO L87 Difference]: Start difference. First operand 54044 states and 66848 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:50,238 INFO L93 Difference]: Finished difference Result 54044 states and 66848 transitions. [2021-11-03 04:25:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:25:50,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 04:25:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:50,337 INFO L225 Difference]: With dead ends: 54044 [2021-11-03 04:25:50,338 INFO L226 Difference]: Without dead ends: 54040 [2021-11-03 04:25:50,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:25:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54040 states. [2021-11-03 04:25:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54040 to 54040. [2021-11-03 04:25:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54040 states, 53955 states have (on average 1.2388842553980168) internal successors, (66844), 54039 states have internal predecessors, (66844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54040 states to 54040 states and 66844 transitions. [2021-11-03 04:25:52,691 INFO L78 Accepts]: Start accepts. Automaton has 54040 states and 66844 transitions. Word has length 88 [2021-11-03 04:25:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:52,691 INFO L470 AbstractCegarLoop]: Abstraction has 54040 states and 66844 transitions. [2021-11-03 04:25:52,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 54040 states and 66844 transitions. [2021-11-03 04:25:52,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 04:25:52,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:52,694 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:52,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:52,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:52,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:25:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:52,910 INFO L85 PathProgramCache]: Analyzing trace with hash 498443381, now seen corresponding path program 1 times [2021-11-03 04:25:52,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:52,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136436473] [2021-11-03 04:25:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:52,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:52,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:52,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:25:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:55,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:25:55,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:25:56,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:25:56,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:56,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136436473] [2021-11-03 04:25:56,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136436473] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:56,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:56,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:25:56,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000795946] [2021-11-03 04:25:56,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:25:56,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:56,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:25:56,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:25:56,665 INFO L87 Difference]: Start difference. First operand 54040 states and 66844 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:59,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:59,136 INFO L93 Difference]: Finished difference Result 54040 states and 66844 transitions. [2021-11-03 04:25:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:25:59,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 90 [2021-11-03 04:25:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:59,229 INFO L225 Difference]: With dead ends: 54040 [2021-11-03 04:25:59,229 INFO L226 Difference]: Without dead ends: 54036 [2021-11-03 04:25:59,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:25:59,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54036 states. [2021-11-03 04:26:01,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54036 to 54036. [2021-11-03 04:26:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54036 states, 53953 states have (on average 1.23885604136934) internal successors, (66840), 54035 states have internal predecessors, (66840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54036 states to 54036 states and 66840 transitions. [2021-11-03 04:26:01,773 INFO L78 Accepts]: Start accepts. Automaton has 54036 states and 66840 transitions. Word has length 90 [2021-11-03 04:26:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:01,774 INFO L470 AbstractCegarLoop]: Abstraction has 54036 states and 66840 transitions. [2021-11-03 04:26:01,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 54036 states and 66840 transitions. [2021-11-03 04:26:01,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 04:26:01,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:01,776 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:01,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:01,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:01,977 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:26:01,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2032100712, now seen corresponding path program 1 times [2021-11-03 04:26:01,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:01,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129811636] [2021-11-03 04:26:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:01,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:01,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:01,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:01,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:26:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:04,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:26:04,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:05,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:05,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:05,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129811636] [2021-11-03 04:26:05,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129811636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:05,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:05,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:05,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101839221] [2021-11-03 04:26:05,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:05,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:05,785 INFO L87 Difference]: Start difference. First operand 54036 states and 66840 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:08,121 INFO L93 Difference]: Finished difference Result 54036 states and 66840 transitions. [2021-11-03 04:26:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-03 04:26:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:08,207 INFO L225 Difference]: With dead ends: 54036 [2021-11-03 04:26:08,207 INFO L226 Difference]: Without dead ends: 54032 [2021-11-03 04:26:08,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54032 states. [2021-11-03 04:26:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54032 to 54032. [2021-11-03 04:26:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54032 states, 53951 states have (on average 1.238827825248837) internal successors, (66836), 54031 states have internal predecessors, (66836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54032 states to 54032 states and 66836 transitions. [2021-11-03 04:26:10,774 INFO L78 Accepts]: Start accepts. Automaton has 54032 states and 66836 transitions. Word has length 92 [2021-11-03 04:26:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:10,774 INFO L470 AbstractCegarLoop]: Abstraction has 54032 states and 66836 transitions. [2021-11-03 04:26:10,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 54032 states and 66836 transitions. [2021-11-03 04:26:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 04:26:10,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:10,777 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:10,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:10,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:10,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:26:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1361483067, now seen corresponding path program 1 times [2021-11-03 04:26:10,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:10,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715239585] [2021-11-03 04:26:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:10,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:10,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:10,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:26:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:26:13,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:14,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:14,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:14,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715239585] [2021-11-03 04:26:14,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715239585] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:14,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:14,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:14,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601374608] [2021-11-03 04:26:14,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:14,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:14,875 INFO L87 Difference]: Start difference. First operand 54032 states and 66836 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:17,817 INFO L93 Difference]: Finished difference Result 54032 states and 66836 transitions. [2021-11-03 04:26:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:17,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 [2021-11-03 04:26:17,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:17,891 INFO L225 Difference]: With dead ends: 54032 [2021-11-03 04:26:17,891 INFO L226 Difference]: Without dead ends: 54028 [2021-11-03 04:26:17,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:17,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54028 states. [2021-11-03 04:26:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54028 to 54028. [2021-11-03 04:26:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54028 states, 53949 states have (on average 1.238799607036275) internal successors, (66832), 54027 states have internal predecessors, (66832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54028 states to 54028 states and 66832 transitions. [2021-11-03 04:26:20,753 INFO L78 Accepts]: Start accepts. Automaton has 54028 states and 66832 transitions. Word has length 94 [2021-11-03 04:26:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:20,754 INFO L470 AbstractCegarLoop]: Abstraction has 54028 states and 66832 transitions. [2021-11-03 04:26:20,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 54028 states and 66832 transitions. [2021-11-03 04:26:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 04:26:20,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:20,756 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:20,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:20,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:20,957 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:26:20,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1579649954, now seen corresponding path program 1 times [2021-11-03 04:26:20,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:20,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448484550] [2021-11-03 04:26:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:20,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:20,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:20,961 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:20,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:26:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:23,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:26:23,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:24,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:24,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:24,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448484550] [2021-11-03 04:26:24,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448484550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:24,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:24,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:24,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673858393] [2021-11-03 04:26:24,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:24,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:24,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:24,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:24,974 INFO L87 Difference]: Start difference. First operand 54028 states and 66832 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 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) [2021-11-03 04:26:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:27,990 INFO L93 Difference]: Finished difference Result 54028 states and 66832 transitions. [2021-11-03 04:26:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:27,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 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 96 [2021-11-03 04:26:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:28,061 INFO L225 Difference]: With dead ends: 54028 [2021-11-03 04:26:28,061 INFO L226 Difference]: Without dead ends: 54024 [2021-11-03 04:26:28,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:28,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54024 states. [2021-11-03 04:26:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54024 to 54024. [2021-11-03 04:26:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54024 states, 53947 states have (on average 1.2387713867314216) internal successors, (66828), 54023 states have internal predecessors, (66828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54024 states to 54024 states and 66828 transitions. [2021-11-03 04:26:30,844 INFO L78 Accepts]: Start accepts. Automaton has 54024 states and 66828 transitions. Word has length 96 [2021-11-03 04:26:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:30,844 INFO L470 AbstractCegarLoop]: Abstraction has 54024 states and 66828 transitions. [2021-11-03 04:26:30,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 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) [2021-11-03 04:26:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 54024 states and 66828 transitions. [2021-11-03 04:26:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 04:26:30,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:30,846 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:30,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:31,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:31,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:26:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1920002047, now seen corresponding path program 1 times [2021-11-03 04:26:31,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:31,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050825563] [2021-11-03 04:26:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:31,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:31,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:31,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:26:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:33,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:26:33,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:34,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:35,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:35,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050825563] [2021-11-03 04:26:35,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050825563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:35,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:35,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:35,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656585582] [2021-11-03 04:26:35,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:35,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:35,105 INFO L87 Difference]: Start difference. First operand 54024 states and 66828 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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) [2021-11-03 04:26:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:38,538 INFO L93 Difference]: Finished difference Result 54024 states and 66828 transitions. [2021-11-03 04:26:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:38,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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 98 [2021-11-03 04:26:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:38,617 INFO L225 Difference]: With dead ends: 54024 [2021-11-03 04:26:38,617 INFO L226 Difference]: Without dead ends: 54020 [2021-11-03 04:26:38,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54020 states. [2021-11-03 04:26:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54020 to 54020. [2021-11-03 04:26:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54020 states, 53945 states have (on average 1.2387431643340439) internal successors, (66824), 54019 states have internal predecessors, (66824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54020 states to 54020 states and 66824 transitions. [2021-11-03 04:26:41,899 INFO L78 Accepts]: Start accepts. Automaton has 54020 states and 66824 transitions. Word has length 98 [2021-11-03 04:26:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:41,899 INFO L470 AbstractCegarLoop]: Abstraction has 54020 states and 66824 transitions. [2021-11-03 04:26:41,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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) [2021-11-03 04:26:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 54020 states and 66824 transitions. [2021-11-03 04:26:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 04:26:41,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:41,902 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:41,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:42,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:42,105 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:26:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1714118692, now seen corresponding path program 1 times [2021-11-03 04:26:42,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:42,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754483927] [2021-11-03 04:26:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:42,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:42,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:42,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:42,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:26:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:44,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:26:44,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:45,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:46,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:46,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754483927] [2021-11-03 04:26:46,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754483927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:46,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:46,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:46,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855344495] [2021-11-03 04:26:46,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:46,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:46,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:46,248 INFO L87 Difference]: Start difference. First operand 54020 states and 66824 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:50,736 INFO L93 Difference]: Finished difference Result 54020 states and 66824 transitions. [2021-11-03 04:26:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:50,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 100 [2021-11-03 04:26:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:50,812 INFO L225 Difference]: With dead ends: 54020 [2021-11-03 04:26:50,813 INFO L226 Difference]: Without dead ends: 54016 [2021-11-03 04:26:50,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54016 states. [2021-11-03 04:26:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54016 to 54016. [2021-11-03 04:26:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54016 states, 53943 states have (on average 1.2387149398439092) internal successors, (66820), 54015 states have internal predecessors, (66820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54016 states to 54016 states and 66820 transitions. [2021-11-03 04:26:54,175 INFO L78 Accepts]: Start accepts. Automaton has 54016 states and 66820 transitions. Word has length 100 [2021-11-03 04:26:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:54,176 INFO L470 AbstractCegarLoop]: Abstraction has 54016 states and 66820 transitions. [2021-11-03 04:26:54,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 54016 states and 66820 transitions. [2021-11-03 04:26:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 04:26:54,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:54,178 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:54,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:54,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:54,378 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:26:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1999229753, now seen corresponding path program 1 times [2021-11-03 04:26:54,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:54,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320967302] [2021-11-03 04:26:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:54,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:54,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:54,381 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:54,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:26:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:57,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:26:57,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:57,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:26:58,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:58,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320967302] [2021-11-03 04:26:58,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320967302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:58,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:58,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:58,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589368294] [2021-11-03 04:26:58,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:58,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:58,652 INFO L87 Difference]: Start difference. First operand 54016 states and 66820 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:02,334 INFO L93 Difference]: Finished difference Result 54016 states and 66820 transitions. [2021-11-03 04:27:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:27:02,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 102 [2021-11-03 04:27:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:02,405 INFO L225 Difference]: With dead ends: 54016 [2021-11-03 04:27:02,405 INFO L226 Difference]: Without dead ends: 54012 [2021-11-03 04:27:02,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:27:02,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54012 states. [2021-11-03 04:27:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54012 to 54012. [2021-11-03 04:27:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54012 states, 53941 states have (on average 1.2386867132607848) internal successors, (66816), 54011 states have internal predecessors, (66816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54012 states to 54012 states and 66816 transitions. [2021-11-03 04:27:06,075 INFO L78 Accepts]: Start accepts. Automaton has 54012 states and 66816 transitions. Word has length 102 [2021-11-03 04:27:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:06,075 INFO L470 AbstractCegarLoop]: Abstraction has 54012 states and 66816 transitions. [2021-11-03 04:27:06,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 54012 states and 66816 transitions. [2021-11-03 04:27:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 04:27:06,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:06,077 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:27:06,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-03 04:27:06,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:06,278 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:27:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash -468621933, now seen corresponding path program 1 times [2021-11-03 04:27:06,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:06,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832317761] [2021-11-03 04:27:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:06,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:06,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:06,282 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:06,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:27:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:09,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:27:09,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:09,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:09,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:09,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832317761] [2021-11-03 04:27:09,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832317761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:09,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:09,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:27:09,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750211465] [2021-11-03 04:27:09,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:27:09,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:09,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:27:09,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:27:09,976 INFO L87 Difference]: Start difference. First operand 54012 states and 66816 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:17,844 INFO L93 Difference]: Finished difference Result 130738 states and 162015 transitions. [2021-11-03 04:27:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:27:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-03 04:27:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:17,967 INFO L225 Difference]: With dead ends: 130738 [2021-11-03 04:27:17,967 INFO L226 Difference]: Without dead ends: 76896 [2021-11-03 04:27:18,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:27:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76896 states. [2021-11-03 04:27:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76896 to 76592. [2021-11-03 04:27:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76592 states, 76521 states have (on average 1.241227898224017) internal successors, (94980), 76591 states have internal predecessors, (94980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76592 states to 76592 states and 94980 transitions. [2021-11-03 04:27:23,741 INFO L78 Accepts]: Start accepts. Automaton has 76592 states and 94980 transitions. Word has length 103 [2021-11-03 04:27:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:23,741 INFO L470 AbstractCegarLoop]: Abstraction has 76592 states and 94980 transitions. [2021-11-03 04:27:23,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 76592 states and 94980 transitions. [2021-11-03 04:27:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 04:27:23,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:23,743 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:27:23,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:27:23,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:23,944 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:27:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1409262102, now seen corresponding path program 1 times [2021-11-03 04:27:23,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:23,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460778888] [2021-11-03 04:27:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:23,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:23,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:23,949 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:23,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:27:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:26,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:27:26,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:27:27,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:27:28,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:28,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460778888] [2021-11-03 04:27:28,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460778888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:28,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:28,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:27:28,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814073652] [2021-11-03 04:27:28,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:27:28,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:28,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:27:28,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:27:28,550 INFO L87 Difference]: Start difference. First operand 76592 states and 94980 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:34,281 INFO L93 Difference]: Finished difference Result 76592 states and 94980 transitions. [2021-11-03 04:27:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:27:34,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 104 [2021-11-03 04:27:34,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:34,393 INFO L225 Difference]: With dead ends: 76592 [2021-11-03 04:27:34,393 INFO L226 Difference]: Without dead ends: 76588 [2021-11-03 04:27:34,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:27:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76588 states. [2021-11-03 04:27:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76588 to 76588. [2021-11-03 04:27:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76588 states, 76519 states have (on average 1.2412080659705433) internal successors, (94976), 76587 states have internal predecessors, (94976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76588 states to 76588 states and 94976 transitions. [2021-11-03 04:27:40,113 INFO L78 Accepts]: Start accepts. Automaton has 76588 states and 94976 transitions. Word has length 104 [2021-11-03 04:27:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:40,113 INFO L470 AbstractCegarLoop]: Abstraction has 76588 states and 94976 transitions. [2021-11-03 04:27:40,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 76588 states and 94976 transitions. [2021-11-03 04:27:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 04:27:40,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:40,115 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:27:40,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-03 04:27:40,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:40,317 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:27:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1386032243, now seen corresponding path program 1 times [2021-11-03 04:27:40,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:40,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225355009] [2021-11-03 04:27:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:40,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:40,321 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:40,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:27:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:43,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:27:43,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:27:44,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:27:45,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:45,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225355009] [2021-11-03 04:27:45,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225355009] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:45,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:45,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:27:45,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043912014] [2021-11-03 04:27:45,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:27:45,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:27:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:27:45,023 INFO L87 Difference]: Start difference. First operand 76588 states and 94976 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:50,710 INFO L93 Difference]: Finished difference Result 76588 states and 94976 transitions. [2021-11-03 04:27:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:27:50,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 106 [2021-11-03 04:27:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:50,821 INFO L225 Difference]: With dead ends: 76588 [2021-11-03 04:27:50,821 INFO L226 Difference]: Without dead ends: 76584 [2021-11-03 04:27:50,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:27:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76584 states. [2021-11-03 04:27:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76584 to 76584. [2021-11-03 04:27:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76584 states, 76517 states have (on average 1.2411882326803194) internal successors, (94972), 76583 states have internal predecessors, (94972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76584 states to 76584 states and 94972 transitions. [2021-11-03 04:27:56,702 INFO L78 Accepts]: Start accepts. Automaton has 76584 states and 94972 transitions. Word has length 106 [2021-11-03 04:27:56,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:56,703 INFO L470 AbstractCegarLoop]: Abstraction has 76584 states and 94972 transitions. [2021-11-03 04:27:56,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 76584 states and 94972 transitions. [2021-11-03 04:27:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 04:27:56,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:56,705 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:27:56,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 04:27:56,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:56,920 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:27:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash -536973904, now seen corresponding path program 1 times [2021-11-03 04:27:56,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:56,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51971064] [2021-11-03 04:27:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:56,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:56,923 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:56,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:27:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:59,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:27:59,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:28:00,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:28:01,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:01,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51971064] [2021-11-03 04:28:01,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51971064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:01,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:01,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:28:01,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465284903] [2021-11-03 04:28:01,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:28:01,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:28:01,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:28:01,530 INFO L87 Difference]: Start difference. First operand 76584 states and 94972 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:07,636 INFO L93 Difference]: Finished difference Result 76584 states and 94972 transitions. [2021-11-03 04:28:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:28:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 108 [2021-11-03 04:28:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:07,756 INFO L225 Difference]: With dead ends: 76584 [2021-11-03 04:28:07,756 INFO L226 Difference]: Without dead ends: 76580 [2021-11-03 04:28:07,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:28:07,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76580 states. [2021-11-03 04:28:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76580 to 76580. [2021-11-03 04:28:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76580 states, 76515 states have (on average 1.241168398353264) internal successors, (94968), 76579 states have internal predecessors, (94968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:13,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76580 states to 76580 states and 94968 transitions. [2021-11-03 04:28:13,994 INFO L78 Accepts]: Start accepts. Automaton has 76580 states and 94968 transitions. Word has length 108 [2021-11-03 04:28:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:13,994 INFO L470 AbstractCegarLoop]: Abstraction has 76580 states and 94968 transitions. [2021-11-03 04:28:13,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 76580 states and 94968 transitions. [2021-11-03 04:28:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 04:28:13,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:13,997 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:14,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:14,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:14,221 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:28:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash -635696045, now seen corresponding path program 1 times [2021-11-03 04:28:14,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:14,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717772761] [2021-11-03 04:28:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:14,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:14,225 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:14,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:28:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:17,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:28:17,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:28:18,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:28:19,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:19,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717772761] [2021-11-03 04:28:19,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717772761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:19,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:19,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:28:19,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674819977] [2021-11-03 04:28:19,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:28:19,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:28:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:28:19,211 INFO L87 Difference]: Start difference. First operand 76580 states and 94968 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:25,295 INFO L93 Difference]: Finished difference Result 76580 states and 94968 transitions. [2021-11-03 04:28:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:28:25,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 04:28:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:25,393 INFO L225 Difference]: With dead ends: 76580 [2021-11-03 04:28:25,393 INFO L226 Difference]: Without dead ends: 76576 [2021-11-03 04:28:25,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:28:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76576 states. [2021-11-03 04:28:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76576 to 76576. [2021-11-03 04:28:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76576 states, 76513 states have (on average 1.241148562989296) internal successors, (94964), 76575 states have internal predecessors, (94964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76576 states to 76576 states and 94964 transitions. [2021-11-03 04:28:31,806 INFO L78 Accepts]: Start accepts. Automaton has 76576 states and 94964 transitions. Word has length 110 [2021-11-03 04:28:31,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:31,806 INFO L470 AbstractCegarLoop]: Abstraction has 76576 states and 94964 transitions. [2021-11-03 04:28:31,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 76576 states and 94964 transitions. [2021-11-03 04:28:31,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 04:28:31,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:31,808 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:31,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:32,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:32,021 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:28:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1018392714, now seen corresponding path program 1 times [2021-11-03 04:28:32,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:32,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096121815] [2021-11-03 04:28:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:32,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:32,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:32,024 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:32,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:28:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:35,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:28:35,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:28:35,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:28:36,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:36,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096121815] [2021-11-03 04:28:36,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096121815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:36,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:36,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:28:36,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906592368] [2021-11-03 04:28:36,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:28:36,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:36,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:28:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:28:36,522 INFO L87 Difference]: Start difference. First operand 76576 states and 94964 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:43,134 INFO L93 Difference]: Finished difference Result 76576 states and 94964 transitions. [2021-11-03 04:28:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:28:43,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 04:28:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:43,233 INFO L225 Difference]: With dead ends: 76576 [2021-11-03 04:28:43,234 INFO L226 Difference]: Without dead ends: 76572 [2021-11-03 04:28:43,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:28:43,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76572 states. [2021-11-03 04:28:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76572 to 76572. [2021-11-03 04:28:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76572 states, 76511 states have (on average 1.2411287265883337) internal successors, (94960), 76571 states have internal predecessors, (94960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76572 states to 76572 states and 94960 transitions. [2021-11-03 04:28:49,835 INFO L78 Accepts]: Start accepts. Automaton has 76572 states and 94960 transitions. Word has length 112 [2021-11-03 04:28:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:49,835 INFO L470 AbstractCegarLoop]: Abstraction has 76572 states and 94960 transitions. [2021-11-03 04:28:49,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 76572 states and 94960 transitions. [2021-11-03 04:28:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 04:28:49,837 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:49,837 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:49,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:50,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:50,045 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:28:50,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:50,046 INFO L85 PathProgramCache]: Analyzing trace with hash 577296153, now seen corresponding path program 1 times [2021-11-03 04:28:50,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:50,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59114444] [2021-11-03 04:28:50,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:50,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:50,049 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:50,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:28:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:53,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:28:53,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:28:53,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:28:54,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:54,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59114444] [2021-11-03 04:28:54,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59114444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:54,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:54,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:28:54,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217630577] [2021-11-03 04:28:54,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:28:54,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:28:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:28:54,633 INFO L87 Difference]: Start difference. First operand 76572 states and 94960 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:01,477 INFO L93 Difference]: Finished difference Result 76572 states and 94960 transitions. [2021-11-03 04:29:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:29:01,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 04:29:01,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:01,579 INFO L225 Difference]: With dead ends: 76572 [2021-11-03 04:29:01,580 INFO L226 Difference]: Without dead ends: 76568 [2021-11-03 04:29:01,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:29:01,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76568 states. [2021-11-03 04:29:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76568 to 76568. [2021-11-03 04:29:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76568 states, 76509 states have (on average 1.241108889150296) internal successors, (94956), 76567 states have internal predecessors, (94956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76568 states to 76568 states and 94956 transitions. [2021-11-03 04:29:08,572 INFO L78 Accepts]: Start accepts. Automaton has 76568 states and 94956 transitions. Word has length 114 [2021-11-03 04:29:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:08,572 INFO L470 AbstractCegarLoop]: Abstraction has 76568 states and 94956 transitions. [2021-11-03 04:29:08,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 76568 states and 94956 transitions. [2021-11-03 04:29:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 04:29:08,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:08,574 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:08,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-03 04:29:08,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:29:08,777 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:29:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash 730972988, now seen corresponding path program 1 times [2021-11-03 04:29:08,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:29:08,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782355707] [2021-11-03 04:29:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:08,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:29:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:29:08,782 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:29:08,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 04:29:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:11,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:29:11,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:29:12,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:29:13,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:29:13,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782355707] [2021-11-03 04:29:13,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782355707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:13,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:13,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:29:13,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800129045] [2021-11-03 04:29:13,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:29:13,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:29:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:29:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:29:13,533 INFO L87 Difference]: Start difference. First operand 76568 states and 94956 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:20,938 INFO L93 Difference]: Finished difference Result 76568 states and 94956 transitions. [2021-11-03 04:29:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:29:20,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 116 [2021-11-03 04:29:20,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:21,051 INFO L225 Difference]: With dead ends: 76568 [2021-11-03 04:29:21,052 INFO L226 Difference]: Without dead ends: 76494 [2021-11-03 04:29:21,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:29:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76494 states. [2021-11-03 04:29:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76494 to 38689. [2021-11-03 04:29:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38689 states, 38632 states have (on average 1.2389987575067303) internal successors, (47865), 38688 states have internal predecessors, (47865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38689 states to 38689 states and 47865 transitions. [2021-11-03 04:29:25,608 INFO L78 Accepts]: Start accepts. Automaton has 38689 states and 47865 transitions. Word has length 116 [2021-11-03 04:29:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:25,609 INFO L470 AbstractCegarLoop]: Abstraction has 38689 states and 47865 transitions. [2021-11-03 04:29:25,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 38689 states and 47865 transitions. [2021-11-03 04:29:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-03 04:29:25,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:25,611 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:25,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:29:25,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:29:25,829 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:29:25,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:25,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1106336160, now seen corresponding path program 1 times [2021-11-03 04:29:25,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:29:25,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70254472] [2021-11-03 04:29:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:25,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:29:25,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:29:25,832 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:29:25,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:29:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:29,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:29:29,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:29:29,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:29:30,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:29:30,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70254472] [2021-11-03 04:29:30,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70254472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:30,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:30,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:29:30,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119032880] [2021-11-03 04:29:30,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:29:30,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:29:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:29:30,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:29:30,046 INFO L87 Difference]: Start difference. First operand 38689 states and 47865 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:38,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:38,190 INFO L93 Difference]: Finished difference Result 88760 states and 109853 transitions. [2021-11-03 04:29:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:29:38,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 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 148 [2021-11-03 04:29:38,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:38,264 INFO L225 Difference]: With dead ends: 88760 [2021-11-03 04:29:38,264 INFO L226 Difference]: Without dead ends: 50241 [2021-11-03 04:29:38,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:29:38,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50241 states. [2021-11-03 04:29:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50241 to 50045. [2021-11-03 04:29:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50045 states, 49988 states have (on average 1.2400776186284708) internal successors, (61989), 50044 states have internal predecessors, (61989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50045 states to 50045 states and 61989 transitions. [2021-11-03 04:29:44,066 INFO L78 Accepts]: Start accepts. Automaton has 50045 states and 61989 transitions. Word has length 148 [2021-11-03 04:29:44,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:44,067 INFO L470 AbstractCegarLoop]: Abstraction has 50045 states and 61989 transitions. [2021-11-03 04:29:44,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 50045 states and 61989 transitions. [2021-11-03 04:29:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-03 04:29:44,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:44,069 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:44,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 04:29:44,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:29:44,272 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:29:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:44,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1614146300, now seen corresponding path program 1 times [2021-11-03 04:29:44,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:29:44,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148925452] [2021-11-03 04:29:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:44,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:29:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:29:44,275 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:29:44,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 04:29:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:47,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:29:47,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:29:48,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:29:48,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:29:48,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148925452] [2021-11-03 04:29:48,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148925452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:48,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:48,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:29:48,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070472205] [2021-11-03 04:29:48,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:29:48,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:29:48,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:29:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:29:48,518 INFO L87 Difference]: Start difference. First operand 50045 states and 61989 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:58,372 INFO L93 Difference]: Finished difference Result 111508 states and 138155 transitions. [2021-11-03 04:29:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:29:58,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-03 04:29:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:58,468 INFO L225 Difference]: With dead ends: 111508 [2021-11-03 04:29:58,468 INFO L226 Difference]: Without dead ends: 61633 [2021-11-03 04:29:58,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:29:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61633 states. [2021-11-03 04:30:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61633 to 61437. [2021-11-03 04:30:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61437 states, 61380 states have (on average 1.240713587487781) internal successors, (76155), 61436 states have internal predecessors, (76155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61437 states to 61437 states and 76155 transitions. [2021-11-03 04:30:05,727 INFO L78 Accepts]: Start accepts. Automaton has 61437 states and 76155 transitions. Word has length 151 [2021-11-03 04:30:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:05,727 INFO L470 AbstractCegarLoop]: Abstraction has 61437 states and 76155 transitions. [2021-11-03 04:30:05,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 61437 states and 76155 transitions. [2021-11-03 04:30:05,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-03 04:30:05,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:05,730 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:05,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 04:30:05,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:30:05,945 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr85ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:30:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:05,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2003938587, now seen corresponding path program 1 times [2021-11-03 04:30:05,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:30:05,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063468762] [2021-11-03 04:30:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:05,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:30:05,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:30:05,949 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:30:05,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-03 04:30:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:09,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:30:09,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:30:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:30:10,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:30:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:30:10,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:30:10,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063468762] [2021-11-03 04:30:10,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063468762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:10,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:10,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:30:10,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100107614] [2021-11-03 04:30:10,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:30:10,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:30:10,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:30:10,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:30:10,551 INFO L87 Difference]: Start difference. First operand 61437 states and 76155 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:18,092 INFO L93 Difference]: Finished difference Result 122710 states and 152133 transitions. [2021-11-03 04:30:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:30:18,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2021-11-03 04:30:18,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:18,180 INFO L225 Difference]: With dead ends: 122710 [2021-11-03 04:30:18,180 INFO L226 Difference]: Without dead ends: 61443 [2021-11-03 04:30:18,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:30:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61443 states. [2021-11-03 04:30:25,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61443 to 61443. [2021-11-03 04:30:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61443 states, 61386 states have (on average 1.2406900596227153) internal successors, (76161), 61442 states have internal predecessors, (76161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61443 states to 61443 states and 76161 transitions. [2021-11-03 04:30:25,444 INFO L78 Accepts]: Start accepts. Automaton has 61443 states and 76161 transitions. Word has length 187 [2021-11-03 04:30:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:25,445 INFO L470 AbstractCegarLoop]: Abstraction has 61443 states and 76161 transitions. [2021-11-03 04:30:25,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 61443 states and 76161 transitions. [2021-11-03 04:30:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-03 04:30:25,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:25,446 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:25,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-03 04:30:25,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:30:25,647 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr85ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:30:25,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash 362756007, now seen corresponding path program 1 times [2021-11-03 04:30:25,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:30:25,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259375683] [2021-11-03 04:30:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:25,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:30:25,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:30:25,651 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:30:25,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 04:30:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:29,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:30:29,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:30:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:30:29,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:30:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:30:30,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:30:30,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259375683] [2021-11-03 04:30:30,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259375683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:30,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:30,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:30:30,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668202336] [2021-11-03 04:30:30,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:30:30,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:30:30,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:30:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:30:30,222 INFO L87 Difference]: Start difference. First operand 61443 states and 76161 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:41,205 INFO L93 Difference]: Finished difference Result 128653 states and 159458 transitions. [2021-11-03 04:30:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:30:41,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2021-11-03 04:30:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:41,297 INFO L225 Difference]: With dead ends: 128653 [2021-11-03 04:30:41,298 INFO L226 Difference]: Without dead ends: 67380 [2021-11-03 04:30:41,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:30:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67380 states. [2021-11-03 04:30:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67380 to 67184. [2021-11-03 04:30:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67184 states, 67127 states have (on average 1.2409909574388844) internal successors, (83304), 67183 states have internal predecessors, (83304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67184 states to 67184 states and 83304 transitions. [2021-11-03 04:30:49,534 INFO L78 Accepts]: Start accepts. Automaton has 67184 states and 83304 transitions. Word has length 187 [2021-11-03 04:30:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:49,535 INFO L470 AbstractCegarLoop]: Abstraction has 67184 states and 83304 transitions. [2021-11-03 04:30:49,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 67184 states and 83304 transitions. [2021-11-03 04:30:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-03 04:30:49,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:49,537 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:49,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-03 04:30:49,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:30:49,737 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:30:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash -453074082, now seen corresponding path program 1 times [2021-11-03 04:30:49,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:30:49,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838759568] [2021-11-03 04:30:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:49,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:30:49,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:30:49,740 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:30:49,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 04:30:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:53,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:30:53,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:30:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:30:53,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:30:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:30:54,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:30:54,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838759568] [2021-11-03 04:30:54,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838759568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:54,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:54,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:30:54,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379936564] [2021-11-03 04:30:54,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:30:54,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:30:54,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:30:54,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:30:54,416 INFO L87 Difference]: Start difference. First operand 67184 states and 83304 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:31:07,424 INFO L93 Difference]: Finished difference Result 145798 states and 180779 transitions. [2021-11-03 04:31:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:31:07,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 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 190 [2021-11-03 04:31:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:07,534 INFO L225 Difference]: With dead ends: 145798 [2021-11-03 04:31:07,534 INFO L226 Difference]: Without dead ends: 78784 [2021-11-03 04:31:07,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:31:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78784 states. [2021-11-03 04:31:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78784 to 78588. [2021-11-03 04:31:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78588 states, 78531 states have (on average 1.241471520800703) internal successors, (97494), 78587 states have internal predecessors, (97494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78588 states to 78588 states and 97494 transitions. [2021-11-03 04:31:17,667 INFO L78 Accepts]: Start accepts. Automaton has 78588 states and 97494 transitions. Word has length 190 [2021-11-03 04:31:17,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:31:17,668 INFO L470 AbstractCegarLoop]: Abstraction has 78588 states and 97494 transitions. [2021-11-03 04:31:17,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:17,668 INFO L276 IsEmpty]: Start isEmpty. Operand 78588 states and 97494 transitions. [2021-11-03 04:31:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-03 04:31:17,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:31:17,670 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:31:17,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-03 04:31:17,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:31:17,871 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:31:17,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:31:17,871 INFO L85 PathProgramCache]: Analyzing trace with hash -662692179, now seen corresponding path program 1 times [2021-11-03 04:31:17,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:31:17,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143660449] [2021-11-03 04:31:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:17,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:31:17,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:31:17,874 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:31:17,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-03 04:31:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:21,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:31:21,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:31:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:31:22,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:31:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:31:23,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:31:23,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143660449] [2021-11-03 04:31:23,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143660449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:31:23,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:31:23,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-03 04:31:23,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780647159] [2021-11-03 04:31:23,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:31:23,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:31:23,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:31:23,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:31:23,393 INFO L87 Difference]: Start difference. First operand 78588 states and 97494 transitions. Second operand has 15 states, 15 states have (on average 13.6) internal successors, (204), 15 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:32:11,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:32:11,961 INFO L93 Difference]: Finished difference Result 342793 states and 424603 transitions. [2021-11-03 04:32:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-03 04:32:11,962 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.6) internal successors, (204), 15 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-03 04:32:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:32:12,672 INFO L225 Difference]: With dead ends: 342793 [2021-11-03 04:32:12,672 INFO L226 Difference]: Without dead ends: 263967 [2021-11-03 04:32:12,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=716, Invalid=2254, Unknown=0, NotChecked=0, Total=2970 [2021-11-03 04:32:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263967 states. [2021-11-03 04:32:27,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263967 to 84263. [2021-11-03 04:32:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84263 states, 84206 states have (on average 1.2416336128066883) internal successors, (104553), 84262 states have internal predecessors, (104553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:32:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84263 states to 84263 states and 104553 transitions. [2021-11-03 04:32:27,776 INFO L78 Accepts]: Start accepts. Automaton has 84263 states and 104553 transitions. Word has length 196 [2021-11-03 04:32:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:32:27,777 INFO L470 AbstractCegarLoop]: Abstraction has 84263 states and 104553 transitions. [2021-11-03 04:32:27,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.6) internal successors, (204), 15 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:32:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 84263 states and 104553 transitions. [2021-11-03 04:32:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-03 04:32:27,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:32:27,779 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:32:27,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-03 04:32:27,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:32:27,980 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:32:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:32:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash 538297794, now seen corresponding path program 1 times [2021-11-03 04:32:27,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:32:27,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678698176] [2021-11-03 04:32:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:32:27,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:32:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:32:27,983 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:32:27,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-03 04:32:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:32:32,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:32:32,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:32:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-03 04:32:32,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:32:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-03 04:32:33,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:32:33,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678698176] [2021-11-03 04:32:33,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678698176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:32:33,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:32:33,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:32:33,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417252860] [2021-11-03 04:32:33,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:32:33,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:32:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:32:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:32:33,357 INFO L87 Difference]: Start difference. First operand 84263 states and 104553 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:23,790 INFO L93 Difference]: Finished difference Result 272060 states and 337482 transitions. [2021-11-03 04:33:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:33:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2021-11-03 04:33:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:24,287 INFO L225 Difference]: With dead ends: 272060 [2021-11-03 04:33:24,287 INFO L226 Difference]: Without dead ends: 187967 [2021-11-03 04:33:24,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:33:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187967 states. [2021-11-03 04:33:40,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187967 to 84281. [2021-11-03 04:33:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84281 states, 84224 states have (on average 1.2415819718844985) internal successors, (104571), 84280 states have internal predecessors, (104571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84281 states to 84281 states and 104571 transitions. [2021-11-03 04:33:40,806 INFO L78 Accepts]: Start accepts. Automaton has 84281 states and 104571 transitions. Word has length 217 [2021-11-03 04:33:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:40,807 INFO L470 AbstractCegarLoop]: Abstraction has 84281 states and 104571 transitions. [2021-11-03 04:33:40,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 84281 states and 104571 transitions. [2021-11-03 04:33:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-03 04:33:40,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:40,808 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:40,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:41,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:41,009 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:33:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:41,010 INFO L85 PathProgramCache]: Analyzing trace with hash -763938698, now seen corresponding path program 1 times [2021-11-03 04:33:41,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:41,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245235785] [2021-11-03 04:33:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:41,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:41,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:41,013 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:41,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-03 04:33:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:45,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:33:45,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-03 04:33:46,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-03 04:33:48,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:48,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245235785] [2021-11-03 04:33:48,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245235785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:48,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:48,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:33:48,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14822420] [2021-11-03 04:33:48,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:48,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:48,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:48,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:48,095 INFO L87 Difference]: Start difference. First operand 84281 states and 104571 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:05,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:05,034 INFO L93 Difference]: Finished difference Result 168392 states and 208953 transitions. [2021-11-03 04:34:05,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:34:05,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 223 [2021-11-03 04:34:05,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:05,158 INFO L225 Difference]: With dead ends: 168392 [2021-11-03 04:34:05,158 INFO L226 Difference]: Without dead ends: 84281 [2021-11-03 04:34:05,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:34:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84281 states. [2021-11-03 04:34:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84281 to 84281. [2021-11-03 04:34:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84281 states, 84224 states have (on average 1.2415107332826747) internal successors, (104565), 84280 states have internal predecessors, (104565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84281 states to 84281 states and 104565 transitions. [2021-11-03 04:34:21,905 INFO L78 Accepts]: Start accepts. Automaton has 84281 states and 104565 transitions. Word has length 223 [2021-11-03 04:34:21,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:21,905 INFO L470 AbstractCegarLoop]: Abstraction has 84281 states and 104565 transitions. [2021-11-03 04:34:21,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 84281 states and 104565 transitions. [2021-11-03 04:34:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-03 04:34:21,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:21,907 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:21,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:22,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:22,118 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:34:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:22,118 INFO L85 PathProgramCache]: Analyzing trace with hash -818331596, now seen corresponding path program 1 times [2021-11-03 04:34:22,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:22,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353862852] [2021-11-03 04:34:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:22,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:22,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:22,121 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:22,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-03 04:34:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:26,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:34:26,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:34:27,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:34:27,901 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:27,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353862852] [2021-11-03 04:34:27,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353862852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:27,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:27,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-03 04:34:27,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524420928] [2021-11-03 04:34:27,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:34:27,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:34:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:34:27,903 INFO L87 Difference]: Start difference. First operand 84281 states and 104565 transitions. Second operand has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:33,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:35:33,921 INFO L93 Difference]: Finished difference Result 321521 states and 398519 transitions. [2021-11-03 04:35:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 04:35:33,922 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 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 223 [2021-11-03 04:35:33,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:35:34,566 INFO L225 Difference]: With dead ends: 321521 [2021-11-03 04:35:34,566 INFO L226 Difference]: Without dead ends: 237206 [2021-11-03 04:35:34,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 04:35:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237206 states. [2021-11-03 04:35:52,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237206 to 84281. [2021-11-03 04:35:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84281 states, 84224 states have (on average 1.2415107332826747) internal successors, (104565), 84280 states have internal predecessors, (104565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84281 states to 84281 states and 104565 transitions. [2021-11-03 04:35:52,430 INFO L78 Accepts]: Start accepts. Automaton has 84281 states and 104565 transitions. Word has length 223 [2021-11-03 04:35:52,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:35:52,431 INFO L470 AbstractCegarLoop]: Abstraction has 84281 states and 104565 transitions. [2021-11-03 04:35:52,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:52,431 INFO L276 IsEmpty]: Start isEmpty. Operand 84281 states and 104565 transitions. [2021-11-03 04:35:52,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-03 04:35:52,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:52,434 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:35:52,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-03 04:35:52,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:35:52,634 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-03 04:35:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1124748946, now seen corresponding path program 1 times [2021-11-03 04:35:52,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:35:52,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010014593] [2021-11-03 04:35:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:52,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:35:52,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:35:52,869 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:35:52,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a47001a-f1f9-4fa8-81bb-6651ee3982af/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-03 04:35:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:57,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:35:57,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:35:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:35:58,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:35:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:35:59,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:35:59,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010014593] [2021-11-03 04:35:59,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010014593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:35:59,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:35:59,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:35:59,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468262362] [2021-11-03 04:35:59,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:35:59,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:35:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:35:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:35:59,824 INFO L87 Difference]: Start difference. First operand 84281 states and 104565 transitions. Second operand has 5 states, 5 states have (on average 54.8) internal successors, (274), 5 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)