./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro --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 1d51b990e6445ed156c5ede746535f5b5f7ba06d95cc894d4b94049499df3553 --- 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-8393723 [2022-11-18 18:38:38,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:38,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:39,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:39,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:39,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:39,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:39,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:39,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:39,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:39,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:39,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:39,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:39,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:39,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:39,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:39,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:39,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:39,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:39,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:39,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:39,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:39,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:39,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:39,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:39,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:39,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:39,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:39,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:39,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:39,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:39,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:39,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:39,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:39,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:39,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:39,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:39,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:39,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:39,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:39,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:39,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:38:39,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:39,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:39,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:39,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:39,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:39,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:39,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:39,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:39,178 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:39,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:39,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:39,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:38:39,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:39,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:39,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:38:39,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:39,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:38:39,183 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:39,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:38:39,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:39,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:38:39,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:39,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:39,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:39,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:39,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:39,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:39,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:38:39,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:38:39,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:38:39,189 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:38:39,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:38:39,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:38:39,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d51b990e6445ed156c5ede746535f5b5f7ba06d95cc894d4b94049499df3553 [2022-11-18 18:38:39,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:39,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:39,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:39,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:39,581 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:39,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2022-11-18 18:38:39,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/data/bf6d6f2b6/632635c9a6c14c7f822962e9c57d8987/FLAG1f2ddf1bc [2022-11-18 18:38:40,758 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:40,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2022-11-18 18:38:40,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/data/bf6d6f2b6/632635c9a6c14c7f822962e9c57d8987/FLAG1f2ddf1bc [2022-11-18 18:38:41,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/data/bf6d6f2b6/632635c9a6c14c7f822962e9c57d8987 [2022-11-18 18:38:41,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:41,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:41,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:41,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:41,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:41,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:41" (1/1) ... [2022-11-18 18:38:41,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e55be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:41, skipping insertion in model container [2022-11-18 18:38:41,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:41" (1/1) ... [2022-11-18 18:38:41,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:41,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:42,011 WARN L234 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_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[26860,26873] [2022-11-18 18:38:42,066 WARN L234 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_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[32415,32428] [2022-11-18 18:38:43,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:43,209 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:43,268 WARN L234 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_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[26860,26873] [2022-11-18 18:38:43,279 WARN L234 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_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c[32415,32428] [2022-11-18 18:38:44,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:44,083 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:44,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44 WrapperNode [2022-11-18 18:38:44,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:44,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:44,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:44,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:44,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:44,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:44,750 INFO L138 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5249 [2022-11-18 18:38:44,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:44,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:44,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:44,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:44,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:44,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:44,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:44,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:45,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:45,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:45,245 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:45,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:45,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:38:45,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:38:45,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:38:45,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:38:45,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (1/1) ... [2022-11-18 18:38:45,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:45,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:38:45,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44d1bd1-4cc2-4bdb-a822-431f3b5c24ce/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:38:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:38:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:38:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:38:45,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:38:45,651 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:38:45,654 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:52,278 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:52,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:52,295 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:38:52,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:52 BoogieIcfgContainer [2022-11-18 18:38:52,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:52,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:52,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:52,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:52,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:41" (1/3) ... [2022-11-18 18:38:52,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220de6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:52, skipping insertion in model container [2022-11-18 18:38:52,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:44" (2/3) ... [2022-11-18 18:38:52,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220de6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:52, skipping insertion in model container [2022-11-18 18:38:52,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:52" (3/3) ... [2022-11-18 18:38:52,313 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label01.c [2022-11-18 18:38:52,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:52,337 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:38:52,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:52,464 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;@f212149, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:52,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:38:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 947 states, 944 states have (on average 1.9036016949152543) internal successors, (1797), 946 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 18:38:52,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:52,495 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] [2022-11-18 18:38:52,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash -60564882, now seen corresponding path program 1 times [2022-11-18 18:38:52,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:52,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884082132] [2022-11-18 18:38:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:52,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:52,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:52,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884082132] [2022-11-18 18:38:52,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884082132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:52,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:52,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:52,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194223876] [2022-11-18 18:38:52,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:38:52,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:38:52,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:38:52,929 INFO L87 Difference]: Start difference. First operand has 947 states, 944 states have (on average 1.9036016949152543) internal successors, (1797), 946 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:53,044 INFO L93 Difference]: Finished difference Result 1827 states and 3464 transitions. [2022-11-18 18:38:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:38:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-18 18:38:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:53,084 INFO L225 Difference]: With dead ends: 1827 [2022-11-18 18:38:53,091 INFO L226 Difference]: Without dead ends: 881 [2022-11-18 18:38:53,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:38:53,109 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:53,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-18 18:38:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2022-11-18 18:38:53,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 879 states have (on average 1.8930602957906713) internal successors, (1664), 880 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:53,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1664 transitions. [2022-11-18 18:38:53,226 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1664 transitions. Word has length 30 [2022-11-18 18:38:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:53,227 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1664 transitions. [2022-11-18 18:38:53,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1664 transitions. [2022-11-18 18:38:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 18:38:53,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:53,230 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] [2022-11-18 18:38:53,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:38:53,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash -194578388, now seen corresponding path program 1 times [2022-11-18 18:38:53,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:53,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296720652] [2022-11-18 18:38:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:53,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:53,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:53,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296720652] [2022-11-18 18:38:53,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296720652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:53,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:53,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:53,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339666178] [2022-11-18 18:38:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:53,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:38:53,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:38:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:53,653 INFO L87 Difference]: Start difference. First operand 881 states and 1664 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:53,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:53,926 INFO L93 Difference]: Finished difference Result 945 states and 1765 transitions. [2022-11-18 18:38:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:53,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-18 18:38:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:53,932 INFO L225 Difference]: With dead ends: 945 [2022-11-18 18:38:53,933 INFO L226 Difference]: Without dead ends: 881 [2022-11-18 18:38:53,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:53,935 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 3 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:53,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6584 Invalid, 71 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:38:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-18 18:38:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2022-11-18 18:38:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 879 states have (on average 1.8236632536973834) internal successors, (1603), 880 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:53,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1603 transitions. [2022-11-18 18:38:53,967 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1603 transitions. Word has length 30 [2022-11-18 18:38:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:53,968 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1603 transitions. [2022-11-18 18:38:53,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1603 transitions. [2022-11-18 18:38:53,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 18:38:53,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:53,970 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] [2022-11-18 18:38:53,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:38:53,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash -832710315, now seen corresponding path program 1 times [2022-11-18 18:38:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:53,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616586636] [2022-11-18 18:38:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:53,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:54,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616586636] [2022-11-18 18:38:54,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616586636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:54,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:54,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:54,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761721362] [2022-11-18 18:38:54,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:54,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:54,154 INFO L87 Difference]: Start difference. First operand 881 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:00,386 INFO L93 Difference]: Finished difference Result 2385 states and 4476 transitions. [2022-11-18 18:39:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:00,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-18 18:39:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:00,396 INFO L225 Difference]: With dead ends: 2385 [2022-11-18 18:39:00,396 INFO L226 Difference]: Without dead ends: 1632 [2022-11-18 18:39:00,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:00,399 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 931 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:00,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 241 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-18 18:39:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-11-18 18:39:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2022-11-18 18:39:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1630 states have (on average 1.826993865030675) internal successors, (2978), 1631 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2978 transitions. [2022-11-18 18:39:00,460 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2978 transitions. Word has length 48 [2022-11-18 18:39:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:00,461 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 2978 transitions. [2022-11-18 18:39:00,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2978 transitions. [2022-11-18 18:39:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 18:39:00,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:00,465 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] [2022-11-18 18:39:00,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:39:00,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:00,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash 255619932, now seen corresponding path program 1 times [2022-11-18 18:39:00,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:00,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763174702] [2022-11-18 18:39:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:00,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:00,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763174702] [2022-11-18 18:39:00,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763174702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:00,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:00,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:39:00,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856968164] [2022-11-18 18:39:00,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:00,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:39:00,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:00,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:39:00,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:00,987 INFO L87 Difference]: Start difference. First operand 1632 states and 2978 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:02,017 INFO L93 Difference]: Finished difference Result 2592 states and 4530 transitions. [2022-11-18 18:39:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:39:02,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-11-18 18:39:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:02,035 INFO L225 Difference]: With dead ends: 2592 [2022-11-18 18:39:02,035 INFO L226 Difference]: Without dead ends: 2532 [2022-11-18 18:39:02,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:39:02,051 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 13373 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13373 SdHoareTripleChecker+Valid, 6388 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:02,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13373 Valid, 6388 Invalid, 374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:39:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-11-18 18:39:02,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1690. [2022-11-18 18:39:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1688 states have (on average 1.819905213270142) internal successors, (3072), 1689 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3072 transitions. [2022-11-18 18:39:02,159 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3072 transitions. Word has length 90 [2022-11-18 18:39:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:02,162 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 3072 transitions. [2022-11-18 18:39:02,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3072 transitions. [2022-11-18 18:39:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 18:39:02,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:02,170 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] [2022-11-18 18:39:02,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:39:02,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:02,171 INFO L85 PathProgramCache]: Analyzing trace with hash -578069748, now seen corresponding path program 1 times [2022-11-18 18:39:02,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:02,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761766520] [2022-11-18 18:39:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:02,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:02,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:02,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761766520] [2022-11-18 18:39:02,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761766520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:02,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:02,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664756219] [2022-11-18 18:39:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:02,427 INFO L87 Difference]: Start difference. First operand 1690 states and 3072 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:02,541 INFO L93 Difference]: Finished difference Result 1915 states and 3435 transitions. [2022-11-18 18:39:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:02,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-18 18:39:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:02,554 INFO L225 Difference]: With dead ends: 1915 [2022-11-18 18:39:02,554 INFO L226 Difference]: Without dead ends: 1797 [2022-11-18 18:39:02,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:02,557 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 1506 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:02,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-11-18 18:39:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2022-11-18 18:39:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.8070273284997211) internal successors, (3240), 1794 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3240 transitions. [2022-11-18 18:39:02,667 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3240 transitions. Word has length 92 [2022-11-18 18:39:02,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:02,668 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 3240 transitions. [2022-11-18 18:39:02,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3240 transitions. [2022-11-18 18:39:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 18:39:02,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:02,672 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] [2022-11-18 18:39:02,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:39:02,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash -511576236, now seen corresponding path program 1 times [2022-11-18 18:39:02,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:02,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379174264] [2022-11-18 18:39:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:03,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:03,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379174264] [2022-11-18 18:39:03,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379174264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:03,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:03,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:39:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78938695] [2022-11-18 18:39:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:03,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:39:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:39:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:03,565 INFO L87 Difference]: Start difference. First operand 1795 states and 3240 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:04,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:04,301 INFO L93 Difference]: Finished difference Result 2020 states and 3600 transitions. [2022-11-18 18:39:04,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:39:04,302 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-18 18:39:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:04,312 INFO L225 Difference]: With dead ends: 2020 [2022-11-18 18:39:04,313 INFO L226 Difference]: Without dead ends: 1797 [2022-11-18 18:39:04,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:39:04,315 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 11004 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11004 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:04,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11004 Valid, 2257 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:39:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-11-18 18:39:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2022-11-18 18:39:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.8059118795315114) internal successors, (3238), 1794 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3238 transitions. [2022-11-18 18:39:04,450 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3238 transitions. Word has length 92 [2022-11-18 18:39:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:04,451 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 3238 transitions. [2022-11-18 18:39:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3238 transitions. [2022-11-18 18:39:04,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 18:39:04,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:04,454 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] [2022-11-18 18:39:04,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:39:04,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:04,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:04,455 INFO L85 PathProgramCache]: Analyzing trace with hash 906283047, now seen corresponding path program 1 times [2022-11-18 18:39:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:04,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801652144] [2022-11-18 18:39:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:04,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:04,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801652144] [2022-11-18 18:39:04,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801652144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:04,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:04,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:39:04,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913294635] [2022-11-18 18:39:04,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:04,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:39:04,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:04,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:39:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:39:04,814 INFO L87 Difference]: Start difference. First operand 1795 states and 3238 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:04,981 INFO L93 Difference]: Finished difference Result 2015 states and 3585 transitions. [2022-11-18 18:39:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:39:04,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-18 18:39:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:04,991 INFO L225 Difference]: With dead ends: 2015 [2022-11-18 18:39:04,992 INFO L226 Difference]: Without dead ends: 2013 [2022-11-18 18:39:04,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:39:04,994 INFO L413 NwaCegarLoop]: 1691 mSDtfsCounter, 262 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 6502 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:04,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 6502 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-11-18 18:39:05,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1801. [2022-11-18 18:39:05,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1799 states have (on average 1.802668148971651) internal successors, (3243), 1800 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 3243 transitions. [2022-11-18 18:39:05,085 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 3243 transitions. Word has length 93 [2022-11-18 18:39:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:05,086 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 3243 transitions. [2022-11-18 18:39:05,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:05,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 3243 transitions. [2022-11-18 18:39:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:39:05,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:05,089 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] [2022-11-18 18:39:05,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:39:05,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:05,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1719553388, now seen corresponding path program 1 times [2022-11-18 18:39:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:05,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168394563] [2022-11-18 18:39:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:05,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:05,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:05,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168394563] [2022-11-18 18:39:05,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168394563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:05,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:05,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:05,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844761569] [2022-11-18 18:39:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:05,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:05,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:05,207 INFO L87 Difference]: Start difference. First operand 1801 states and 3243 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:05,313 INFO L93 Difference]: Finished difference Result 2043 states and 3624 transitions. [2022-11-18 18:39:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:05,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-18 18:39:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:05,324 INFO L225 Difference]: With dead ends: 2043 [2022-11-18 18:39:05,324 INFO L226 Difference]: Without dead ends: 1919 [2022-11-18 18:39:05,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:05,326 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 1526 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:05,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1783 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:05,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-11-18 18:39:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2022-11-18 18:39:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.7879895561357702) internal successors, (3424), 1916 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3424 transitions. [2022-11-18 18:39:05,434 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3424 transitions. Word has length 94 [2022-11-18 18:39:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:05,434 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 3424 transitions. [2022-11-18 18:39:05,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3424 transitions. [2022-11-18 18:39:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:39:05,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:05,439 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] [2022-11-18 18:39:05,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:39:05,439 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:05,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:05,440 INFO L85 PathProgramCache]: Analyzing trace with hash 593433492, now seen corresponding path program 1 times [2022-11-18 18:39:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:05,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851018061] [2022-11-18 18:39:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:05,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:05,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851018061] [2022-11-18 18:39:05,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851018061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:05,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:05,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:05,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525697066] [2022-11-18 18:39:05,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:05,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:05,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:05,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:05,551 INFO L87 Difference]: Start difference. First operand 1917 states and 3424 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:05,711 INFO L93 Difference]: Finished difference Result 2579 states and 4464 transitions. [2022-11-18 18:39:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:05,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-18 18:39:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:05,723 INFO L225 Difference]: With dead ends: 2579 [2022-11-18 18:39:05,723 INFO L226 Difference]: Without dead ends: 2236 [2022-11-18 18:39:05,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:05,727 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 1524 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:05,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-11-18 18:39:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2234. [2022-11-18 18:39:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 2232 states have (on average 1.7544802867383513) internal successors, (3916), 2233 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 3916 transitions. [2022-11-18 18:39:05,902 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 3916 transitions. Word has length 94 [2022-11-18 18:39:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:05,903 INFO L495 AbstractCegarLoop]: Abstraction has 2234 states and 3916 transitions. [2022-11-18 18:39:05,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 3916 transitions. [2022-11-18 18:39:05,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:39:05,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:05,905 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] [2022-11-18 18:39:05,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:39:05,905 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1596549740, now seen corresponding path program 1 times [2022-11-18 18:39:05,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:05,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192629575] [2022-11-18 18:39:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:06,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192629575] [2022-11-18 18:39:06,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192629575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:06,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:06,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:06,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117589710] [2022-11-18 18:39:06,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:06,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:06,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:06,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:06,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:06,096 INFO L87 Difference]: Start difference. First operand 2234 states and 3916 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:06,422 INFO L93 Difference]: Finished difference Result 3506 states and 5898 transitions. [2022-11-18 18:39:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:06,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-18 18:39:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:06,437 INFO L225 Difference]: With dead ends: 3506 [2022-11-18 18:39:06,437 INFO L226 Difference]: Without dead ends: 2846 [2022-11-18 18:39:06,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:06,440 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1520 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:06,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1785 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-11-18 18:39:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2844. [2022-11-18 18:39:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2842 states have (on average 1.7072484166080226) internal successors, (4852), 2843 states have internal predecessors, (4852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4852 transitions. [2022-11-18 18:39:06,756 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4852 transitions. Word has length 94 [2022-11-18 18:39:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:06,756 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 4852 transitions. [2022-11-18 18:39:06,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4852 transitions. [2022-11-18 18:39:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:39:06,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:06,759 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] [2022-11-18 18:39:06,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:39:06,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1332693356, now seen corresponding path program 1 times [2022-11-18 18:39:06,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:06,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90401725] [2022-11-18 18:39:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:06,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:06,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90401725] [2022-11-18 18:39:06,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90401725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:06,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:06,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:06,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450573815] [2022-11-18 18:39:06,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:06,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:06,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:06,874 INFO L87 Difference]: Start difference. First operand 2844 states and 4852 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:07,405 INFO L93 Difference]: Finished difference Result 5288 states and 8622 transitions. [2022-11-18 18:39:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:07,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-18 18:39:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:07,424 INFO L225 Difference]: With dead ends: 5288 [2022-11-18 18:39:07,424 INFO L226 Difference]: Without dead ends: 4018 [2022-11-18 18:39:07,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:07,428 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 1518 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:07,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1787 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2022-11-18 18:39:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 4016. [2022-11-18 18:39:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 4014 states have (on average 1.6512207274539112) internal successors, (6628), 4015 states have internal predecessors, (6628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 6628 transitions. [2022-11-18 18:39:08,106 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 6628 transitions. Word has length 94 [2022-11-18 18:39:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:08,107 INFO L495 AbstractCegarLoop]: Abstraction has 4016 states and 6628 transitions. [2022-11-18 18:39:08,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 6628 transitions. [2022-11-18 18:39:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:39:08,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:08,110 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] [2022-11-18 18:39:08,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:39:08,111 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:08,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:08,111 INFO L85 PathProgramCache]: Analyzing trace with hash -94431340, now seen corresponding path program 1 times [2022-11-18 18:39:08,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:08,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270884621] [2022-11-18 18:39:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:08,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:08,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270884621] [2022-11-18 18:39:08,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270884621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:08,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:08,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:08,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12381978] [2022-11-18 18:39:08,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:08,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:08,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:08,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:08,297 INFO L87 Difference]: Start difference. First operand 4016 states and 6628 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:09,494 INFO L93 Difference]: Finished difference Result 8708 states and 13782 transitions. [2022-11-18 18:39:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:09,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-18 18:39:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:09,528 INFO L225 Difference]: With dead ends: 8708 [2022-11-18 18:39:09,528 INFO L226 Difference]: Without dead ends: 6266 [2022-11-18 18:39:09,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:09,534 INFO L413 NwaCegarLoop]: 1671 mSDtfsCounter, 1516 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:09,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2022-11-18 18:39:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6264. [2022-11-18 18:39:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6264 states, 6262 states have (on average 1.5950175662727564) internal successors, (9988), 6263 states have internal predecessors, (9988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6264 states to 6264 states and 9988 transitions. [2022-11-18 18:39:10,851 INFO L78 Accepts]: Start accepts. Automaton has 6264 states and 9988 transitions. Word has length 94 [2022-11-18 18:39:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:10,852 INFO L495 AbstractCegarLoop]: Abstraction has 6264 states and 9988 transitions. [2022-11-18 18:39:10,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 6264 states and 9988 transitions. [2022-11-18 18:39:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:39:10,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:10,854 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] [2022-11-18 18:39:10,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:39:10,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1985067156, now seen corresponding path program 1 times [2022-11-18 18:39:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:10,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281140693] [2022-11-18 18:39:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:10,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:10,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281140693] [2022-11-18 18:39:10,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281140693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:10,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:10,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:10,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475753912] [2022-11-18 18:39:10,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:10,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:10,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:10,970 INFO L87 Difference]: Start difference. First operand 6264 states and 9988 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:13,028 INFO L93 Difference]: Finished difference Result 15260 states and 23526 transitions. [2022-11-18 18:39:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-18 18:39:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:13,058 INFO L225 Difference]: With dead ends: 15260 [2022-11-18 18:39:13,058 INFO L226 Difference]: Without dead ends: 10570 [2022-11-18 18:39:13,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:13,070 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1514 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:13,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1791 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:13,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2022-11-18 18:39:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 10568. [2022-11-18 18:39:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10568 states, 10566 states have (on average 1.5449555176982774) internal successors, (16324), 10567 states have internal predecessors, (16324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10568 states to 10568 states and 16324 transitions. [2022-11-18 18:39:15,445 INFO L78 Accepts]: Start accepts. Automaton has 10568 states and 16324 transitions. Word has length 94 [2022-11-18 18:39:15,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:15,446 INFO L495 AbstractCegarLoop]: Abstraction has 10568 states and 16324 transitions. [2022-11-18 18:39:15,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10568 states and 16324 transitions. [2022-11-18 18:39:15,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:39:15,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:15,448 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] [2022-11-18 18:39:15,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:39:15,449 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:15,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash -528967276, now seen corresponding path program 1 times [2022-11-18 18:39:15,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:15,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510360313] [2022-11-18 18:39:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:15,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:15,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510360313] [2022-11-18 18:39:15,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510360313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:15,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:15,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458569539] [2022-11-18 18:39:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:15,605 INFO L87 Difference]: Start difference. First operand 10568 states and 16324 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:18,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:18,605 INFO L93 Difference]: Finished difference Result 27788 states and 41862 transitions. [2022-11-18 18:39:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-18 18:39:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:18,657 INFO L225 Difference]: With dead ends: 27788 [2022-11-18 18:39:18,658 INFO L226 Difference]: Without dead ends: 18794 [2022-11-18 18:39:18,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:18,672 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1512 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:18,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1793 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:18,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2022-11-18 18:39:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 18792. [2022-11-18 18:39:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18792 states, 18790 states have (on average 1.502288451303885) internal successors, (28228), 18791 states have internal predecessors, (28228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18792 states to 18792 states and 28228 transitions. [2022-11-18 18:39:21,579 INFO L78 Accepts]: Start accepts. Automaton has 18792 states and 28228 transitions. Word has length 94 [2022-11-18 18:39:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:21,580 INFO L495 AbstractCegarLoop]: Abstraction has 18792 states and 28228 transitions. [2022-11-18 18:39:21,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 18792 states and 28228 transitions. [2022-11-18 18:39:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:39:21,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:21,582 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] [2022-11-18 18:39:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:39:21,583 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1759464300, now seen corresponding path program 1 times [2022-11-18 18:39:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240090939] [2022-11-18 18:39:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:21,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:21,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240090939] [2022-11-18 18:39:21,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240090939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:21,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:21,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:21,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137690844] [2022-11-18 18:39:21,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:21,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:21,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:21,692 INFO L87 Difference]: Start difference. First operand 18792 states and 28228 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:26,682 INFO L93 Difference]: Finished difference Result 51692 states and 76230 transitions. [2022-11-18 18:39:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:26,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-18 18:39:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:26,781 INFO L225 Difference]: With dead ends: 51692 [2022-11-18 18:39:26,781 INFO L226 Difference]: Without dead ends: 34474 [2022-11-18 18:39:26,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:26,810 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 1522 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:26,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1791 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34474 states. [2022-11-18 18:39:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34474 to 34472. [2022-11-18 18:39:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34472 states, 34470 states have (on average 1.4650420655642589) internal successors, (50500), 34471 states have internal predecessors, (50500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34472 states to 34472 states and 50500 transitions. [2022-11-18 18:39:32,459 INFO L78 Accepts]: Start accepts. Automaton has 34472 states and 50500 transitions. Word has length 94 [2022-11-18 18:39:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:32,459 INFO L495 AbstractCegarLoop]: Abstraction has 34472 states and 50500 transitions. [2022-11-18 18:39:32,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 34472 states and 50500 transitions. [2022-11-18 18:39:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 18:39:32,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:32,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:32,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:39:32,480 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:32,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:32,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1733023753, now seen corresponding path program 1 times [2022-11-18 18:39:32,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:32,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510274879] [2022-11-18 18:39:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:32,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:39:33,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:33,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510274879] [2022-11-18 18:39:33,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510274879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:33,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:33,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:39:33,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610555243] [2022-11-18 18:39:33,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:33,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:39:33,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:33,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:39:33,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:33,127 INFO L87 Difference]: Start difference. First operand 34472 states and 50500 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)