./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7337e3db834e57315ee73ddaf50a0d2f544bd41ddf080ac302a0a29c062196b8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 01:57:06,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:57:06,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:57:06,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:57:06,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:57:06,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:57:06,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:57:06,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:57:06,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:57:06,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:57:06,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:57:06,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:57:06,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:57:06,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:57:06,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:57:06,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:57:06,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:57:06,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:57:06,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:57:06,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:57:06,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:57:06,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:57:06,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:57:06,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:57:06,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:57:06,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:57:06,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:57:06,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:57:06,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:57:06,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:57:06,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:57:06,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:57:06,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:57:06,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:57:06,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:57:06,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:57:06,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:57:06,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:57:06,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:57:06,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:57:06,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:57:06,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:57:06,295 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:57:06,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:57:06,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:57:06,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:57:06,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:57:06,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:57:06,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:57:06,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:57:06,298 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:57:06,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:57:06,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:57:06,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:57:06,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:57:06,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:57:06,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:57:06,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:57:06,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:57:06,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:57:06,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:57:06,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:57:06,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:57:06,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:57:06,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:57:06,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:57:06,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:57:06,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:57:06,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:57:06,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:57:06,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:57:06,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:57:06,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:57:06,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:57:06,304 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:57:06,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:57:06,305 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7337e3db834e57315ee73ddaf50a0d2f544bd41ddf080ac302a0a29c062196b8 [2022-11-23 01:57:06,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:57:06,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:57:06,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:57:06,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:57:06,672 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:57:06,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-2.c [2022-11-23 01:57:09,699 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:57:10,497 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:57:10,498 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-2.c [2022-11-23 01:57:10,552 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/data/c3d9c13e4/69708908c75a4b1885f555f5c4b5a225/FLAGdbca50cab [2022-11-23 01:57:10,569 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/data/c3d9c13e4/69708908c75a4b1885f555f5c4b5a225 [2022-11-23 01:57:10,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:57:10,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:57:10,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:57:10,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:57:10,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:57:10,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:57:10" (1/1) ... [2022-11-23 01:57:10,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51eb7c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:10, skipping insertion in model container [2022-11-23 01:57:10,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:57:10" (1/1) ... [2022-11-23 01:57:10,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:57:10,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:57:13,222 WARN L237 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_90cdfc7b-1397-49f2-8379-021ae3274d18/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-2.c[382357,382370] [2022-11-23 01:57:13,261 WARN L237 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_90cdfc7b-1397-49f2-8379-021ae3274d18/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-2.c[383339,383352] [2022-11-23 01:57:13,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:57:13,628 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:57:14,817 WARN L237 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_90cdfc7b-1397-49f2-8379-021ae3274d18/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-2.c[382357,382370] [2022-11-23 01:57:14,822 WARN L237 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_90cdfc7b-1397-49f2-8379-021ae3274d18/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-2.c[383339,383352] [2022-11-23 01:57:14,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:57:14,928 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:57:14,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14 WrapperNode [2022-11-23 01:57:14,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:57:14,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:57:14,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:57:14,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:57:14,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:15,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:15,524 INFO L138 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2022-11-23 01:57:15,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:57:15,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:57:15,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:57:15,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:57:15,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:15,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:15,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:15,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:15,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:16,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:16,164 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:16,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:16,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:57:16,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:57:16,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:57:16,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:57:16,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (1/1) ... [2022-11-23 01:57:16,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:57:16,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:57:16,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:57:16,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cdfc7b-1397-49f2-8379-021ae3274d18/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:57:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:57:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 01:57:16,337 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 01:57:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 01:57:16,338 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 01:57:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 01:57:16,338 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 01:57:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 01:57:16,338 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 01:57:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 01:57:16,338 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 01:57:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 01:57:16,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 01:57:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:57:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:57:16,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:57:16,500 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:57:16,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:57:26,280 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:57:26,316 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:57:26,316 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-23 01:57:26,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:57:26 BoogieIcfgContainer [2022-11-23 01:57:26,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:57:26,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:57:26,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:57:26,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:57:26,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:57:10" (1/3) ... [2022-11-23 01:57:26,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f980b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:57:26, skipping insertion in model container [2022-11-23 01:57:26,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:14" (2/3) ... [2022-11-23 01:57:26,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f980b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:57:26, skipping insertion in model container [2022-11-23 01:57:26,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:57:26" (3/3) ... [2022-11-23 01:57:26,339 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.12.cil-2.c [2022-11-23 01:57:26,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:57:26,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 01:57:26,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:57:26,482 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a35386d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:57:26,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 01:57:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-23 01:57:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:57:26,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:26,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:26,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:26,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2022-11-23 01:57:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:26,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709307017] [2022-11-23 01:57:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:26,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:57:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:57:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:57:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:57:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:57:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:27,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:27,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709307017] [2022-11-23 01:57:27,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709307017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:57:27,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:57:27,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:57:27,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750506054] [2022-11-23 01:57:27,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:57:27,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:57:27,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:27,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:57:27,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:57:27,347 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:57:30,131 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2022-11-23 01:57:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:57:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:57:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:57:30,157 INFO L225 Difference]: With dead ends: 5266 [2022-11-23 01:57:30,158 INFO L226 Difference]: Without dead ends: 2640 [2022-11-23 01:57:30,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:57:30,169 INFO L413 NwaCegarLoop]: 4370 mSDtfsCounter, 1038 mSDsluCounter, 12465 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 16835 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:57:30,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 16835 Invalid, 1092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 01:57:30,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-11-23 01:57:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2022-11-23 01:57:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-23 01:57:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2022-11-23 01:57:30,320 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2022-11-23 01:57:30,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:57:30,320 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2022-11-23 01:57:30,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:30,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2022-11-23 01:57:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:57:30,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:30,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:30,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:57:30,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2022-11-23 01:57:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:30,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712279498] [2022-11-23 01:57:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:30,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:57:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:30,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:57:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:57:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:57:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:57:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:30,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:30,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712279498] [2022-11-23 01:57:30,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712279498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:57:30,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:57:30,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:57:30,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007398683] [2022-11-23 01:57:30,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:57:30,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:57:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:57:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:57:30,550 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:57:32,995 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2022-11-23 01:57:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:57:32,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:57:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:57:33,008 INFO L225 Difference]: With dead ends: 3002 [2022-11-23 01:57:33,009 INFO L226 Difference]: Without dead ends: 2640 [2022-11-23 01:57:33,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:57:33,012 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 1024 mSDsluCounter, 12262 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 16562 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:57:33,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 16562 Invalid, 1091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 01:57:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-11-23 01:57:33,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2022-11-23 01:57:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-23 01:57:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2022-11-23 01:57:33,151 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2022-11-23 01:57:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:57:33,153 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2022-11-23 01:57:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2022-11-23 01:57:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:57:33,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:33,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:33,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:57:33,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2022-11-23 01:57:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:33,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031504785] [2022-11-23 01:57:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:33,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:57:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:57:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:57:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:33,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:57:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:57:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:33,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:33,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031504785] [2022-11-23 01:57:33,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031504785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:57:33,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:57:33,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:57:33,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139656316] [2022-11-23 01:57:33,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:57:33,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:57:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:33,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:57:33,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:57:33,656 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:38,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:57:38,147 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2022-11-23 01:57:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 01:57:38,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:57:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:57:38,161 INFO L225 Difference]: With dead ends: 3514 [2022-11-23 01:57:38,161 INFO L226 Difference]: Without dead ends: 3157 [2022-11-23 01:57:38,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:57:38,164 INFO L413 NwaCegarLoop]: 4305 mSDtfsCounter, 5517 mSDsluCounter, 12816 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5536 SdHoareTripleChecker+Valid, 17121 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:57:38,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5536 Valid, 17121 Invalid, 2482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 01:57:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-11-23 01:57:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2022-11-23 01:57:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-11-23 01:57:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2022-11-23 01:57:38,308 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2022-11-23 01:57:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:57:38,308 INFO L495 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2022-11-23 01:57:38,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2022-11-23 01:57:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:57:38,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:38,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:38,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:57:38,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2022-11-23 01:57:38,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:38,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128944157] [2022-11-23 01:57:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:38,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:57:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:57:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:38,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:57:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:38,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:57:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:57:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:38,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128944157] [2022-11-23 01:57:38,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128944157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:57:38,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:57:38,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:57:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810109373] [2022-11-23 01:57:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:57:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:57:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:57:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:57:38,650 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:57:44,017 INFO L93 Difference]: Finished difference Result 4427 states and 7672 transitions. [2022-11-23 01:57:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:57:44,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:57:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:57:44,032 INFO L225 Difference]: With dead ends: 4427 [2022-11-23 01:57:44,033 INFO L226 Difference]: Without dead ends: 3694 [2022-11-23 01:57:44,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:57:44,037 INFO L413 NwaCegarLoop]: 4508 mSDtfsCounter, 5552 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5571 SdHoareTripleChecker+Valid, 22209 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:57:44,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5571 Valid, 22209 Invalid, 3645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 01:57:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2022-11-23 01:57:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3223. [2022-11-23 01:57:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7736993297159271) internal successors, (5557), 3137 states have internal predecessors, (5557), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-11-23 01:57:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5698 transitions. [2022-11-23 01:57:44,229 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5698 transitions. Word has length 178 [2022-11-23 01:57:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:57:44,230 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 5698 transitions. [2022-11-23 01:57:44,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5698 transitions. [2022-11-23 01:57:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:57:44,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:44,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:44,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 01:57:44,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2022-11-23 01:57:44,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:44,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277683971] [2022-11-23 01:57:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:57:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:57:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:57:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:57:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:57:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:44,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277683971] [2022-11-23 01:57:44,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277683971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:57:44,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:57:44,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:57:44,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549893893] [2022-11-23 01:57:44,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:57:44,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:57:44,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:57:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:57:44,537 INFO L87 Difference]: Start difference. First operand 3223 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:57:49,626 INFO L93 Difference]: Finished difference Result 5773 states and 9826 transitions. [2022-11-23 01:57:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:57:49,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:57:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:57:49,653 INFO L225 Difference]: With dead ends: 5773 [2022-11-23 01:57:49,653 INFO L226 Difference]: Without dead ends: 4691 [2022-11-23 01:57:49,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:57:49,665 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 5664 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5683 SdHoareTripleChecker+Valid, 21373 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:57:49,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5683 Valid, 21373 Invalid, 3276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 01:57:49,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2022-11-23 01:57:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 3922. [2022-11-23 01:57:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3776 states have (on average 1.7378177966101696) internal successors, (6562), 3782 states have internal predecessors, (6562), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-23 01:57:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6795 transitions. [2022-11-23 01:57:50,003 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6795 transitions. Word has length 178 [2022-11-23 01:57:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:57:50,004 INFO L495 AbstractCegarLoop]: Abstraction has 3922 states and 6795 transitions. [2022-11-23 01:57:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6795 transitions. [2022-11-23 01:57:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:57:50,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:50,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:50,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 01:57:50,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2022-11-23 01:57:50,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:50,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539728324] [2022-11-23 01:57:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:57:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:57:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:57:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:57:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:57:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:50,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:50,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539728324] [2022-11-23 01:57:50,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539728324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:57:50,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:57:50,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:57:50,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693159318] [2022-11-23 01:57:50,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:57:50,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:57:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:50,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:57:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:57:50,353 INFO L87 Difference]: Start difference. First operand 3922 states and 6795 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:56,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:57:56,043 INFO L93 Difference]: Finished difference Result 8360 states and 13939 transitions. [2022-11-23 01:57:56,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:57:56,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:57:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:57:56,075 INFO L225 Difference]: With dead ends: 8360 [2022-11-23 01:57:56,076 INFO L226 Difference]: Without dead ends: 6579 [2022-11-23 01:57:56,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:57:56,084 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5550 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5569 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:57:56,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5569 Valid, 22207 Invalid, 3636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 01:57:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2022-11-23 01:57:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 5321. [2022-11-23 01:57:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5063 states have (on average 1.693067351372704) internal successors, (8572), 5073 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-11-23 01:57:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 8995 transitions. [2022-11-23 01:57:56,775 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 8995 transitions. Word has length 178 [2022-11-23 01:57:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:57:56,776 INFO L495 AbstractCegarLoop]: Abstraction has 5321 states and 8995 transitions. [2022-11-23 01:57:56,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:57:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 8995 transitions. [2022-11-23 01:57:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:57:56,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:56,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:56,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 01:57:56,781 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:56,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2022-11-23 01:57:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:56,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019959254] [2022-11-23 01:57:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:57:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:57:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:57:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:57,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:57:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:57:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:57,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:57,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019959254] [2022-11-23 01:57:57,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019959254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:57:57,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:57:57,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:57:57,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288029806] [2022-11-23 01:57:57,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:57:57,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:57:57,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:57,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:57:57,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:57:57,153 INFO L87 Difference]: Start difference. First operand 5321 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:03,197 INFO L93 Difference]: Finished difference Result 13526 states and 22169 transitions. [2022-11-23 01:58:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:58:03,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:58:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:03,235 INFO L225 Difference]: With dead ends: 13526 [2022-11-23 01:58:03,236 INFO L226 Difference]: Without dead ends: 10346 [2022-11-23 01:58:03,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:58:03,248 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5546 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5565 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:03,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5565 Valid, 22207 Invalid, 3608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 01:58:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2022-11-23 01:58:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 8133. [2022-11-23 01:58:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8133 states, 7651 states have (on average 1.6489347797673506) internal successors, (12616), 7669 states have internal predecessors, (12616), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-11-23 01:58:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 13437 transitions. [2022-11-23 01:58:04,352 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 13437 transitions. Word has length 178 [2022-11-23 01:58:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:04,353 INFO L495 AbstractCegarLoop]: Abstraction has 8133 states and 13437 transitions. [2022-11-23 01:58:04,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 13437 transitions. [2022-11-23 01:58:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:58:04,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:04,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:04,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 01:58:04,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2022-11-23 01:58:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88708766] [2022-11-23 01:58:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:58:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:58:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:58:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:58:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:58:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:04,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88708766] [2022-11-23 01:58:04,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88708766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:04,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:04,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:58:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629728841] [2022-11-23 01:58:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:58:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:58:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:58:04,673 INFO L87 Difference]: Start difference. First operand 8133 states and 13437 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:11,608 INFO L93 Difference]: Finished difference Result 23876 states and 38721 transitions. [2022-11-23 01:58:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:58:11,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:58:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:11,672 INFO L225 Difference]: With dead ends: 23876 [2022-11-23 01:58:11,673 INFO L226 Difference]: Without dead ends: 17884 [2022-11-23 01:58:11,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:58:11,694 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5545 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5564 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:11,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5564 Valid, 22207 Invalid, 3595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 01:58:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2022-11-23 01:58:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 13770. [2022-11-23 01:58:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6138629283489097) internal successors, (20722), 12874 states have internal predecessors, (20722), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-23 01:58:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22393 transitions. [2022-11-23 01:58:13,288 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22393 transitions. Word has length 178 [2022-11-23 01:58:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:13,289 INFO L495 AbstractCegarLoop]: Abstraction has 13770 states and 22393 transitions. [2022-11-23 01:58:13,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22393 transitions. [2022-11-23 01:58:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:58:13,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:13,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 01:58:13,298 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:13,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2022-11-23 01:58:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:13,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358661596] [2022-11-23 01:58:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:58:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:58:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:58:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:58:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:58:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:13,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:13,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358661596] [2022-11-23 01:58:13,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358661596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:13,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:13,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:58:13,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889562224] [2022-11-23 01:58:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:13,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:58:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:58:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:58:13,586 INFO L87 Difference]: Start difference. First operand 13770 states and 22393 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:18,437 INFO L93 Difference]: Finished difference Result 29766 states and 48386 transitions. [2022-11-23 01:58:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:58:18,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:58:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:18,502 INFO L225 Difference]: With dead ends: 29766 [2022-11-23 01:58:18,503 INFO L226 Difference]: Without dead ends: 18137 [2022-11-23 01:58:18,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:58:18,540 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 5098 mSDsluCounter, 16760 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5118 SdHoareTripleChecker+Valid, 21015 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:18,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5118 Valid, 21015 Invalid, 1875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 01:58:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2022-11-23 01:58:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 13770. [2022-11-23 01:58:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6112928348909656) internal successors, (20689), 12874 states have internal predecessors, (20689), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-23 01:58:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22360 transitions. [2022-11-23 01:58:20,387 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22360 transitions. Word has length 178 [2022-11-23 01:58:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:20,388 INFO L495 AbstractCegarLoop]: Abstraction has 13770 states and 22360 transitions. [2022-11-23 01:58:20,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22360 transitions. [2022-11-23 01:58:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:58:20,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:20,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:20,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 01:58:20,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:20,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2022-11-23 01:58:20,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:20,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533444935] [2022-11-23 01:58:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:58:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:20,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:58:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:58:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:58:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:58:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:20,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533444935] [2022-11-23 01:58:20,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533444935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:20,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:20,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:58:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726930354] [2022-11-23 01:58:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:20,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:58:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:20,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:58:20,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:58:20,693 INFO L87 Difference]: Start difference. First operand 13770 states and 22360 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:29,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:29,885 INFO L93 Difference]: Finished difference Result 44541 states and 71783 transitions. [2022-11-23 01:58:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:58:29,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:58:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:30,015 INFO L225 Difference]: With dead ends: 44541 [2022-11-23 01:58:30,015 INFO L226 Difference]: Without dead ends: 32912 [2022-11-23 01:58:30,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:58:30,051 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5537 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3492 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5556 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:30,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5556 Valid, 22207 Invalid, 3557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3492 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 01:58:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32912 states. [2022-11-23 01:58:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32912 to 25108. [2022-11-23 01:58:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25108 states, 23282 states have (on average 1.587020015462589) internal successors, (36949), 23348 states have internal predecessors, (36949), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-11-23 01:58:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25108 states to 25108 states and 40482 transitions. [2022-11-23 01:58:33,477 INFO L78 Accepts]: Start accepts. Automaton has 25108 states and 40482 transitions. Word has length 178 [2022-11-23 01:58:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:33,477 INFO L495 AbstractCegarLoop]: Abstraction has 25108 states and 40482 transitions. [2022-11-23 01:58:33,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 25108 states and 40482 transitions. [2022-11-23 01:58:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:58:33,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:33,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:33,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 01:58:33,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:33,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:33,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2022-11-23 01:58:33,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:33,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323043112] [2022-11-23 01:58:33,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:33,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:33,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:58:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:58:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:58:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:58:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:58:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:33,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:33,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323043112] [2022-11-23 01:58:33,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323043112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:33,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:33,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:58:33,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161539040] [2022-11-23 01:58:33,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:58:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:58:33,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:58:33,783 INFO L87 Difference]: Start difference. First operand 25108 states and 40482 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:48,297 INFO L93 Difference]: Finished difference Result 85941 states and 138783 transitions. [2022-11-23 01:58:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:58:48,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:58:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:48,571 INFO L225 Difference]: With dead ends: 85941 [2022-11-23 01:58:48,571 INFO L226 Difference]: Without dead ends: 62974 [2022-11-23 01:58:48,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:58:48,870 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5536 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5555 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:48,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5555 Valid, 22207 Invalid, 3544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 01:58:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62974 states. [2022-11-23 01:58:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62974 to 47845. [2022-11-23 01:58:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47845 states, 44227 states have (on average 1.5727722884211002) internal successors, (69559), 44357 states have internal predecessors, (69559), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-11-23 01:58:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47845 states to 47845 states and 77302 transitions. [2022-11-23 01:58:55,882 INFO L78 Accepts]: Start accepts. Automaton has 47845 states and 77302 transitions. Word has length 178 [2022-11-23 01:58:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:55,882 INFO L495 AbstractCegarLoop]: Abstraction has 47845 states and 77302 transitions. [2022-11-23 01:58:55,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 47845 states and 77302 transitions. [2022-11-23 01:58:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 01:58:55,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:55,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:55,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 01:58:55,910 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:55,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2022-11-23 01:58:55,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:55,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314040741] [2022-11-23 01:58:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:55,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:58:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:58:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 01:58:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:58:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-23 01:58:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:56,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:56,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314040741] [2022-11-23 01:58:56,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314040741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:56,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:56,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:58:56,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225729793] [2022-11-23 01:58:56,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:56,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:58:56,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:56,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:58:56,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:58:56,189 INFO L87 Difference]: Start difference. First operand 47845 states and 77302 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:59:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:21,461 INFO L93 Difference]: Finished difference Result 168740 states and 274629 transitions. [2022-11-23 01:59:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:59:21,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-23 01:59:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:22,367 INFO L225 Difference]: With dead ends: 168740 [2022-11-23 01:59:22,367 INFO L226 Difference]: Without dead ends: 123036 [2022-11-23 01:59:22,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:59:22,561 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 5637 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 21373 SdHoareTripleChecker+Invalid, 3200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:22,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5656 Valid, 21373 Invalid, 3200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 01:59:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123036 states.